保护环境的演讲稿英文

保护环境的演讲稿英文（精选6篇）

保护环境的演讲稿英文 第1篇

，

因为它有一个很大的影响我们. 所以我们应该保护我们的环境。

事实上,我们可以做许多事来改善环境,例如植树,收集废纸、写信给当地报纸来提醒大家来照顾它最重要的是,我认为,让每个人都知道它的重要性,每个人都应该作出贡献。

只要我们努力,我们一定能成功。我们坚信我们能做到!

让我们一起做它!

保护环境的演讲稿英文 第2篇

we live in the world every day.

we eat food, drink water, wear clothes, watch tv, use computers and so on.

we are producing waste every moment.

generally speaking, there are four sorts of waste.

they are material waste, organic waste, inorganic waste and poisonous & harmful waste.

now, we are going to talk about each sort of waste one by one.

material waste: it means the waste of substance or things from which something else can be made.

for example, people throw away the used metal products and buy a new one, so the old metal waste accumulates.

at last, they become waste.

for example, when people finish reading newspaper, the paper will become waste.

when the glass is broken, it also becomes waste.

nobody wants to use a broken window or drink with a broken glass or wear a pair of broken glasses.

once it is broken, it becomes waste.

the rate of using plastics is increasing day by day.

people use plastic bags because they are convenient.

when they get home, they throw the plastics way, paying no attention to the environment.

the more convenience plastics brings to us, the more plastic waste is produced.

this is called “white pollution” as most plastics are white.

some of our products we use every day are made of rubber, just like the tyres and the bottom part of our shoes.

it’s true that rubber plays an important role in our life.

however, it also brings us some trouble when it has been used for a long time and becomes old.

the old tyres become waste because it can’t break down by nature.

保护环境的演讲稿英文 第3篇

By now most power feeders in distribution networks are operated in radial or open loop configurations. The character of open loop operation is that the configuration of the feeder is in a ring but one of the switches in the ring normally operates in an open condition. This normally open switch is called the tie switch. Open loop operation can be considered as one kind of radial operation because power flows in the feeders is in one direction only. This unidirectional aspect allows the use of protection systems without the need for directional discrimination. There are many advantages for open loop or radial configurations, such as increasing the system stability and simplifying protection schemes. In the case of an open loop network, the power supply can be restored to the healthy feeders in the other route by closing the normally open tie switch after a short interval. Radial or open loop configurations have been adopted for use in the operation of distribution networks for many decades. With the rapid expansion of modern power systems and demand for high quality power supplies, closed loop operations have been gradually applied to distributed networks in recent years, especially for networks with the presence of distributed generators (DGs)[1,2,3]. In comparison with open loop conditions, the tie switch is normally closed in closed loop operation, so that a fault in one section will not cause power losses in any downstream feeders. Besides reducing power losses, closed loop operation can also maintain the voltage level at the feeders, and has more capacity to cater for future demands of load rising[2].

Obviously, it is desirable to implement protection for closed loop feeders by using a simple and feasible protection scheme. With the DGs involved in the network, even stricter operating requirements have been imposed on the protection relays[4]. The fault clearance time will determine whether DGs will lose stability or not[5], and the installation of DGs also affects power flow and complicates the voltage and reactive power control. As a result, this time will also affect other relay operation in turn. Based on the above considerations, the design of an appropriate protection scheme for closed loop network with DGs becomes a key research topic with the aim to ensure the security of power networks and exploit the benefits of DGs. Reference [6] illustrates the impact of fault clearing time on DGs' stability through simulation, and reference [7] gives general protection schemes of small generators. Reference [5] is about protection conception using world wide and synchronous devices, which also represents a hot research in power system protection.

Although closed loop operation brings many advantages for improving the security and continuity of power supply, it also increases the short circuit currents and increases the frequency and severity of the voltage dips[8]. Furthermore, the closed loop operation is more vulnerable to power system oscillation. Therefore, more complex protection scheme must be designed to satisfy the requirements of reliability and sensitivity.

1 Conventional Protection Scheme for Distribution Feeders

In radial distribution networks, time-graded over-current protection or inverse definite minimum time (IDMT) over-current protection is widely used to provide the network protection and has proven good sensitivity and reliability[9,10]. For a fault on one of the feeders in the system, the circuit breaker at one end (the source end) can be tripped and directional elements are not needed.

In Fig.1, the distribution feeders, over-current protection settings are given, together with their derivation, which is detailed in reference [9]. In order to ensure the protection's selectivity, the tripping time-distance characteristics of the time-graded over-current protection and IDMT over-current protection are demonstrated in Fig.1(b) and Fig.1(c) respectively.

Conventional over-current protection, however, has a major shortcoming where the relay nearest to source has the longest operating time. This operating time is sometimes too long to prevent excessive disturbance to the power system.

And beside the disadvantage mentioned above, over-current protection would also lose selectivity in short feeder system. The length of the line has a direct influence on the setting of a relay. In industrial distribution networks, power supply cables are usually short, from a few kilometers to hundreds meters. Therefore the cable impedance is much less than the source impedance, and in these circumstances, there is very little difference between the current magnitude of faults at one end of the line and those at the other end of the line.

So only conventional definite time-delay over-current protection, or IDMT over-current protection, is suitable for use in these cases, instead of instantaneous over-current.

In a radial network as shown in Fig.1, the time-delay over-current protection is applied as the main protection. While a fault happens and Ra operates after a definite time, all the feeders, including those supplying downstream bus-bars and their loads, will drop out. In order to reduce the number of sections affected by the fault, loop configuration is put into operation. This approach permits division of the sections affected into two operation modes, the open loop operation and closed loop operation, as shown in Fig.2. Relays and circuit breakers should be installed at both ends of the feeders with directional elements. and closed loop operation can also maintain the voltage level of the power supply besides reducing power losses, and has more capacity to cater for future demands for increased loads.

Furthermore, with the increasing penetration of DGs, radial operation is not suitable for distribution networks with DGs. As shown in Fig.2, if the network is in radial or open loop operation, DG will be disconnected when fault occurs on upstream feeder A-B. Obviously, it is not the best choice for exploiting the maximum advantages of the DG. Consequently, when DG is present, closed loop operation is preferable for distribution networks.

2 Protection Scheme for Closed Loop Network

When an upgrade from open loop to closed loop operation, the capacities of transformers and feeders should be considered and improved as found to be necessary. Next, the protection scheme must be upgraded in order to fully protect and ensure the reliability of power supply. According to different requirements for reliability and sensitivity of protection, some practical and prospective protection schemes are proposed. Special considerations are also discussed for closed loop network employing DGs, in relation to the characteristics of the protection schemes. A practical closed loop distribution network is shown in Fig.3.

In this network, per unit impedance values of the 110 kV substation power supply are X1.max.pu=0.580 8, X1.min.pu=2.192 4, X0.max.pu=1.008, X0.min.pu=1.611 7. The base capacity S=1 000 MVA, and the base voltage U=115 kV. All the cables are 3240 mm2 with impedance value of 0.087 Ω/km. Other parameters are as shown in Fig.3.

Using the closed loop network as an example, the paper investigates the protection schemes as follows.

2.1 Selection of a Disconnection Point in the Closed Loop Operation

If a network working with open loop operation needs to be upgraded to one working with closed loop operation, the design of an economic protection scheme is first to select one disconnection point in the closed loop network, so that for this scheme, each feeder can be guaranteed by one circuit breaker and the corresponding over-current relay. Generally, the disconnected point should be selected near to the mid point of the loads, such as the point S shown in Fig.3.

In this case, only breakers CB1, CB2, CB3, CB6, CB7, CB8 are required, and the conventional time-delay over-current protection can be used without a directional element. In normal closed loop operation, all of the loads are served by power sources. When a fault occurs in the ring, no matter where it is, the over-current protection relay R3 (or R8) should pick up and trip breaker CB3 (or CB8) without time delay. Consequently, according to the protection coordination for radial feeders, the time delay of relays R1, R2, R3, R6, R7, R8 are shown in Fig.4.

Obviously, no matter where the fault point is, some loads in bus B or bus C may lose power supply. Furthermore, if fault occurs at the point f1, which is near to bus A, the fault current flow through the relay R3 may be too small to enable the relay to trip the fault. In this case, relay R3 can only trip fault after relay R1. Based on the Fig.4, it can be seen that the tripping time is so long that the system stability margin decreases.

2.2 Conventional Protection Scheme for Closed Loop Network

2.2.1 Directional Over-current Protection

As mentioned in Chapter one, conventional over-current protection must be replaced by directional relay protection in loop operation, such as directional over-current protection and distance protection, etc. In addition, breakers and directional relays should be applied on both sides of feeders.

In this arrangement, the relays R1, R2, R3, R4, R5 compose one series of protection elements with anti-clockwise direction for one power supply direction, whereas R6, R7, R8, R9, R10 compose another. This is in accordance with the time coordination of over-current protection and the time delays of the relays that are shown in Fig.5. This scheme can trip faults on both feeders and bus-bars, and would not infect power supply of healthy feeders and bus-bars.

Compared with scheme 2.1, the number of loads affected by a fault can be minimized in directional over-current protection, but tripping time for each protected line section is longer, which can be seen by comparing Fig. 4 and Fig. 5. Obviously, this scheme has such shortcoming that the relay near to source has longest operating time setting, where the fault level is the highest.

Furthermore, in radial networks with time-graded over-current relays, the sensitivity of sequence time-graded over-current protections is generally satisfied because the level of the fault current increases with the decrease in line length. But this is not true for closed loop operation. For example, if the point f1 is very close to bus A, the fault current flowing through the relay R10 may be so small that relay R10 may not pick up and trip out the fault with zero time delay, since the pick up value of relay R10 must be greater than the maximum load current. In this case, it must be ensured that relay R1 will trip out the fault with longest time delay (1.2 s) due to the high level fault current that is flowing, and then relays R6～R10 will operate in the radial configuration. This means that relay R10 can trip the fault sequentially. Obviously, no matter where the fault is, the fault clearing time must be longer than 0.6 s, even longer for closed loop system with more feeder sections.

Fault clearing time is critical for the stability of power system, especially for systems with DGs. No matter what kind of DGs are employed, long fault clearing time may lead to fast disconnections of the inverter-based power sources and as a result, synchronized generators lose their stability. Therefore, instantaneous or short time delay protection schemes should be considered as a beneficial supplement to form an integrated protection scheme.

2.2.2 Distance Protection

Distance protection can trip out a fault in a comparatively fast time, and have less affect on the operating mode of the system. At the same time, better coordination among different distance protection elements can be achieved. The length of the feeders in distributed network, however, may be very short so that the sensitivity of distance protection may not be practical.

2.2.3 Pilot Current Differential Protection

Pilot current differential relay provides instantaneous protection for feeders with the highest sensitivity, reliability and selectivity. With this scheme, the protection can trip feeder fault instantaneously and restore power supply to the loads quickly. The advantages of pilot current differential protection is well known, therefore it will not be described here.

Pilot current differential protection can improve the reliability of the distribution system comparing to the conventional over-current or distance protection, with the requirement of expensive communication channel and associated equipment. But it cannot provide protection for bus-bar, to which the loads and DGs are connected. And generally, the bus-bar in distribution network is not equipped with special current differential protection. However, the fault on bus-bar is more serious than that on feeders, which results in sharp voltage drop and high short-circuit current. Therefore, bus-bar fault clearing time should not be longer than several hundred milliseconds when DGs are taken into consideration.

In order to achieve instantaneous protection for important bus-bar with DGs, special bus-bar differential protection can be adopted. And to make this protection easier, this paper proposes an alternative protection scheme for bus-bar, a novel pilot wire instantaneous over-current protection, which is able to trip both feeder and bus-bar faults with minimum time delay.

2.3 Proposed Novel Pilot Wire Instantaneous Over-current Protection for Closed Loop Network

The logic of this pilot wire instantaneous over-current protection is shown in Fig.6.

For the closed loop network shown in Fig.3, as some as directional over-current protection, all of directional relays with same direction of protection can be considered as one group, such as relay R1～R5. In order to illustrate the principle of the pilot wire instantaneous over-current protection, the protection coordination of relays R1～R5 can be shown in a simplified radial operation configuration, as shown in Fig.6(a). The principle of this pilot wire instantaneous over-current protection is shown in Fig.6(b), in which the coordination of relays R3～R5 is taken as an example to illustrate the protection principle.

Except for over-current protection relay R5 on the end feeder, the other protection elements operate in two separate executive circuits after pick up. For the first circuit, each protection relay will send a trip signal with its corresponding time delay tRn after pick up to its upstream relay. This circuit, for the purpose of this discussion, is called circuit 1. For the second circuit, the trip signal is decided by the pick up condition of the local protection and the blocking signal, which is sent by the downstream protection relay based on its pick up condition. This circuit, for the purpose of this discussion, is called circuit 2.

For example, if fault of point f4 occurs on the feeder D-E or bus E, relays R1～R4 detect the fault and pick up. Relay R5 will not pick up because the fault is located in its reverse direction. Therefore, the blocking signal from R5 is zero, so the circuit 2 of relay R4 is enabled. At the same time, the pick up signal of relay R4 is sent through the pilot cable to the upstream relay R3 as a blocking signal. Obviously, the executive circuit 2 of relay R3 is blocked, and relay R3 can only trip the fault with a definite time delay tR3.

The pick up signal of R4 can pass through the “AND”gate. After a short time delay tε, the tripping signal will be sent to circuit breaker CB4 directly. Obviously, by this means, relay R4 can clear faults of feeder D-E or bus E with a very short time delay tε, not the comparatively long time delay tR4. After fault is isolated, other over-current relays R1～R3 will reset. If relay R4 fails to clear faults of feeder D-E or bus E, relay R3 will operate as a backup protection with the original time setting of R3 and R4. If relay R4 doesn't give trip signal for some unexpected reason, relay R3 can trip the fault by the executive circuit 2 with a short time delay tε. It should be noted that tε is only a fixed short time delay, which is long enough to ensure the transmission of the blocking signal from downstream relay received successfully.

With the same operation logic, relays R1～R3 can also clear fault on the local feeder and remote bus-bar with a short time delay tε. As a result, the continuity of power supply, the stability of distribution system and DGs are all improved with high reliability. At present, this blocking function in conventional over-current or IDMT relays has been developed to realize pilot instantaneous over-current protection.In this protection scheme, cable can provide the communication channel. However, sometimes this cable is not available. Therefore, it would be beneficial if the speed of response of the over-current based protection scheme can be substantially increased without the need for communication link.

2.4 Non-communication Directional Over-current Protection

Recently, the concept of non-communication protection has attracted the interests of both academics and manufactures. Based on this concept, a number of new protection schemes for distribution systems have been proposed that accelerate the speed of response over that of the over-current protection based schemes[11,12,13,14,15].

Here non-communication over-current protection is considered to be applied in the closed loop network shown in Fig.3. The relays are arranged into two groups. The conventional over-current time setting group includes relays R4, R5, R9, R10. Obviously, these relays are set with faster operating time as shown in Fig.5. The accelerated operation group consists of the relays R1, R2, R6, R7 which are set at slower operating times than in the conventional scheme. The aim of the technique is to improve the response speed of the relays in the accelerated operation group.

With reference to Fig.3, for a fault of point f1 occurring on cable section A-B, the directional relays R1 and R6～R10 can detect the fault since the fault is in the forward direction for these relays. Relay R10 that has the fastest time setting will operate first to open its associated circuit breaker CB10. After the circuit breaker CB10 has opened the fault is isolated from cable section B-C, C-D, D-E and E-A, and the associated relays R6～R9 will restrain from operation. However, the opening of the circuit breaker CB10 does not clear the fault on section A-B. As long as relay R1 detects the opening of the circuit breaker CB10, it means that the fault is on the protected cable section A-B, and then relay R1 will accelerate the trip of breaker CB1. The detection of the circuit breaker operation takes only a few power frequency cycles; therefore, the operation speed of the relay R1 can be significantly accelerated. In this way, relays R2, R6 and R7 can be accelerated when fault occurs on their associated feeders. Therefore, according to the operation logic of non-communication protection, the diagram of time coordination is shown in Fig.7. Obviously, compared with Fig.4 and Fig.5, the speed and selectivity of protection is improved and guaranteed.

In summary, the relay makes tripping decision based on detecting the circuit breaker operation to determine whether the system is in a balanced operation or not. The system unbalance ratio and the super-imposed signals are used to detect the remote breaker operation, from which it can be derived whether an unbalanced fault is on the protected section[11]. However, these proposed methods can only be used to determine whether the remote circuit breaker opens or not when an unbalanced fault occurs. Particularly, as for closed loop operation, the fault current flowing through the local relay will change when the remote circuit breaker on the line is disconnected. For example, after relay R10 trips fault of point f1, the fault current flowing through relay R1 will change. Therefore, by detecting the variation of fault current, no matter what kind of fault it is, the remote breaker operation can be detected.

It is feasible and economic for closed loop networks to adopt the non-communication over-current protection with confidence that the stability of system and DGs is ensured.

3 Conclusions

This paper proposes a series of protection schemes for closed loop distribution networks based on different protection requirements. These protection schemes take into considerations fault clearance speeds and their impact on DGs. Considering the continuity of power supply, the stability of the system and DGs, a novel pilot wire instantaneous protection is implemented. In addition, the paper also discusses the application and resultant improvement of non-communication over-current protection in closed loop networks with DGs.

保护环境的演讲稿英文 第4篇

《商标法》第十条第一款第（一）项规定：“下列标志不得作为商标使用：（一）同中华人民共和国的国家名称……相同或者近似的……”。根据该规定，与我国国家名称相同或近似的标志，依法应当不得用作商标。这里的“国家名称”包括全称、简称、缩写、英文等。

本案中，申请人所主张的节目标识中英文分别为“中国好声音”和“The Voice of China”，含有“中国”和“China”，较容易被判定属于《商标法》第十条第一款第（一）项规定的禁用标志。《商标审查及审理标准》对含“中国”字样商标申请作出过例外规定，但是“中国好声音”中英文标识并不属于例外情形之一。国家工商总局商标局还于2010年7月发布《含“中国”及首字为“国”字商标的审查审理标准》，规定了可以申请含“中国”字样商标所需具备的四个条件，满足这些条件的商标比如中国石化、中国银行、中国黄金等，但本案“中国好声音”中英文标识并不具备这些条件。

不少意见认为，“中国好声音”整体与我国的国家名称不相同也不近似，因而并不违反《商标法》第十条第一款规定。但需注意的是，《商标法》第十条第一款对于含“中国”标志的禁止，并不仅限于“相同或者近似”的情形。正如最高人民法院在“中国劲酒”案中指出的那样，“国家名称是国家的象征，如果允许随意将其作为商标的组成要素予以注册并作商业使用，将导致国家名称的滥用，损害国家尊严，也可能对社会公共利益和公共秩序产生其他消极、负面影响。”并进一步认为，“中国劲酒”整体上并未与我国国家名称构成相同或者近似，不属于《商标法》第十条第一款第（一）项规定的禁止性标志，但此类标志若具有不良影响，仍可以按照《商标法》相关规定认定为不得使用和注册的商标。该“中国劲酒”商标最终被认定构成“不良影响”，违反了《商标法》第十条第一款第（八）项规定，未能获准注册。

“中国劲酒”案是最高人民法院适用《商标法》第十条第一款禁用标志规定的经典案例，按照这一思路，“中国好声音”即使被判定不属于《商标法》第十条第一款第（一）项规定的禁用标志，也还会面临《商标法》第十条第一款第（八）项“不良影响”标志的审查。

而从目前行政机关对商标审查的实践情况来看，对含“中国”字样的标志把握十分严格。对于含“中国”文字的商标，审查时“应当从严审查，慎之又慎”。据查询，此前曾有过25件“中国好声音”的商标申请，无一例外均被驳回。也就是说，事实上，“中国好声音”也确实未能突破《商标法》第十条第一款的禁止性规定，难以作为商标注册。

需要特别关注的是，《商标法》第十条第一款规定的措辞是相应标志不得作为商标“使用”。“在中国，不具有合法性的商标不仅不能注册，而且也禁止作为未注册商标使用。事实上，商标不具有合法性是无法弥补的严重缺陷……”【黄晖：《商标法》，法律部出版社，2016年1月第2版】。这意味着，凡属于该条款所列标志，不仅不能作为商标注册，在民事纠纷案件中请求作为未注册商标保护时，也不具备受保护基础。并且，《商标法》第十条第一款属于“绝对禁止条款”，不论是在行政确权案件还是民事侵权纠纷案件中，判断是否属于该条款所列禁用标志，标准应当是一致的。基于此，申请人主张保护的“中国好声音”和“the Voice of China”标志，难以具备作为未注册商标保护的基础。

二、给予“知名服务特有名称”的保护需以不属于《商标法》第十条所列禁用标志为前提

一般认为，《反不正当竞争法》中“知名服务特有名称”的保护，本质上就是未注册商标的保护。因此，给予某标志以“知名服务特有名称”的保护时，需要考量是否属于《商标法》第十条第一款规定的禁用标志。

“《反不正当竞争法》第5条第2项所保护的知名商品特有名称、包装和装潢，实际上就是未注册商标。”“《反不正当竞争法》对于知名商品特有名称、包装和装潢的保护，已经相当于商标专用权的保护……”“既然作为识别商品来源的商品的名称、包装和装潢属于未注册商标，当然适用《商标法》第10条第1款的规定。”【孔祥俊：《商标与反不正当竞争法原理与判例》，法律出版社，2009年7月第1版。】

“《反不正当竞争法》虽然没有直接规定对未注册商标的保护，但该法对知名商品特有名称、包装和装潢的保护实质也是对未注册商标的一种保护……”。“2007年1月公布的《最高人民法院关于审理不正当竞争民事案件应用法律若干问题的解释》基本也是处处比照商标法的保护条件和规格，规定对知名商品特有名称、包装和装潢的保护”。【黄晖：《反不正当竞争法对未注册商标的保护》，《中华商标》，2007年04期】

《最高人民法院关于审理不正当竞争民事案件应用法律若干问题的解释》第五条明确规定：“商品的名称、包装、装潢属于商标法第十条第一款规定的不得作为商标使用的标志，当事人请求依照反不正当竞争法第五条第（二）项规定予以保护的，人民法院不予支持。”

本案中，申请人唐德公司关于“知名服务特有名称”的行为保全理由得到了支持：“中国好声音”和“The Voice of China”被认定为电视文娱节目及其制作服务类的知名服务特有名称，存在较大可能性。显然，这里遗漏了是否属于《商标法》第十条第一款所规定禁用标志的初步判断。而这却是裁定被申请人停止使用包含“中国好声音”、“the Voice of China”字样的节目名称的关键理由。

实际上，本案申请人还主张相关节目标识应当作为驰名商标予以保护。对此，法院认为两标识含有中文“中国”和英文“China”，是否符合商标法有关注册商标的规定，尚需在后续诉讼中进一步审理判断。结合案情来看，此处的“是否符合商标法有关注册商标的规定”，实质上就是指是否属于商标法规定的绝对禁注情形，也就是本文重点讨论的是否属于《商标法》第十条第一款规定的禁用标志。

但问题在于，不论是“未注册驰名商标”还是“知名服务特有名称”，在判定是否属于《商标法》第十条第一款所列禁用标志的问题上，所持标准并不应该有什么不同。这是因为，两者本质上都是未注册商标。而《商标法》第十条第一款属于绝对禁止条款，不论是《商标法》里的的未注册商标（包括未注册驰名商标）保护，还是《反不正当竞争法》中的“知名商品特有名称”的保护，在判断标准上都应当是一致的。

至此，笔者认为，本案在审理是否给予“中国好声音”中英文节目标识以“未注册驰名商标”保护时，认为还需进一步审理判断该标志是否符合商标法有关规定，这一做法是审慎的。但与之相矛盾的是，在尚未考虑禁用标志问题的情况下，直接认定相应标志构成“知名服务特有名称”的可能性较大，这显然是值得商榷的。

保护环境英文演讲稿 第5篇

随着英语的流行，越来越多的人讲英语，而英语演讲是提高其英语综合运用能力的一个重要的手段。下面小编整理了保护环境英语演讲稿，供你参考.篇一：保护环境英文演讲稿

Honorable judges, ladies and gentlemen.Today，we are gathering here to discuss a very hot issue.how to find harmony in a new age between man and nature? Where modern science and technology are concerned I am only a layman I have to say.However, living in this “new age” , seeing my dear ones suffering from respiratory diseases from time to time, finding the beautiful colors of green and blue are being replaced by that of gray and pale, and realizing that our mother planet is getting more and more unhealthy;I cant help trying to offer my idea and my trivial efforts to look for the answer of the question.As the ancient Greek oracle goes: know thyself.I think in answering this above-mentioned question, this precondition is also very important.Who are we? This is a question, which should be answered not only by those specialists, but also by every one of human beings.Some people may proudly say: we are the masters of nature.It is true that the idea of “man can conquer nature” has dominated peoples mind for years, and it is true, man has kept acting like a master and doing whatever things he wants for thousands of years.However, as the consequence of this kind of “leadership” , now the “master” seems to be confronted with problems that are far beyond his control.Facts are really very ample.The

green house effect leaves islands and cities along the coast, such as this oriental pearl-Shanghai, in danger of the disaster of being drowned;the holes of the ozone layer make the earth less suitable to live for some creatures including human beings;the phenomena of EL Nino and La Nina leave the land with serious flood and drought, and the diseases, caused by pollution, are increasing at an incredible speed...Seeing all these facts, can we still ignore the counterattack of nature? We are not the masters of nature.Facing all the disasters made by ourselves, we, mankind as a whole should realize that we are just a normal member of the big family of nature.Any mistreatment towards nature will meet only with the revenge from her.By saying so, I do not mean we should give a sudden stop to any development.Because that will result in a threat to the existence of human society.I mean we should treat nature equally, leaving the chance of existence and development to nature as we are obtaining the same thing, and thus we will get the situation of win-win.I am very pleased to find that now more and more people, from every corner of the planet, have come to realize that harmony with nature is the only way to universal and continuous progress and prosperity.And I think that is why we come here from all over the country to discuss this topic today.I want to end my speech by quoting from Mr.Nixon.“Our destiny offers, not the cup of despair, but the chalice of opportunity.” The future is not ours to see of course.However, by seizing firmly the opportunities, by knowing clearly about ourselves, we, human beings, can doubtlessly achieve the real harmony with nature!

Thank you.篇二：保护环境英文演讲稿

Dear headmastersteachersclassmates and friends:

My name is zhang I am very excited to stand here to tell you about environment.When I was youngI always dreamed that I lived in a beautiful country.There were many flowers and trees around our counld hear the birds singing and see the children dancing.The streets were clear and the the air was very fresh!How nice it was!But that only was a dream of mine!How I wish that it would be come true!So I think we should do something to protect our environment.Everyone should make a contribution to protect the environment.Taking care of our environment is very you liveyou can do something around your neighbourhood.Have you ever thrown any litter onto the ground?Have you ever drawn pictures on public walls?Have you ever spat in a public place?Have you ever cut down trees?If your answers are “No”it means that you have already helped protect our environment.It is our duty to keep our envionment clean and tidy.You might ask yourself“Have I ever picked up some rubbish and thrown it into a dustbin?Have I ever collected waste paper or bottles for recycling?Have I ever planted any trees or flowers in or near my neighbourhood?”If your answers are“Yes”it means that you have already done something useful to improve the environment.Now I want to say :Let`s do our best to make our world more beautiful!Thank you!

篇三：保护环境英文演讲稿

2023年环境保护英文演讲稿 第6篇

I saw advertised in the country for a year only food waste is equivalent to pour out the ration of two hundred million people a year, this is an astounding number, thus we can see the waste is huge. Moreover, Chinas waste is not a little, we do not pay attention to the automobile exhaust, the harm of battery is buried in the soil... Thus China has become a “waste of power.

How can I be eco-friendly? This is a simple and complex problems. I think ”starts from the minor matter“ is the answer to this question, never throw rubbish casually, from shopping after all bring their own shopping bag, start from go out by bus more, since to use less disposable chopsticks, lunch box... Environmental protection needs to be done? Eat less animals, with environmental protection batteries, use less air conditioning, water reuse, conveniently turn off the faucet, will waste paper recycling and so on many ways, as long as it contributes to the environmental protection way, is environmentally friendly.

Environmental how many, how much your moral, environmental protection, how much you love how many, how many green, you how many character. From now on will do a green, understand environmental protection, people to protect the environment! Make the earth a better place, let the life become more beautiful, make people more beautiful!