1、Safety First。安全第一。
2、Protection of the environment is everyone's responsibility。保护环境，人人有责。
3、Protecting the environment，everyone，s duty。保护环境，人人有责。
4、The federal government promulgated the Clean Water Act and the Clean Air Act。联邦**颁布了《水清洁法》和《空气清洁法》。
5、The amount of water which is suitable to drink is less and less。适合人类喝的水是越来越少了。
6、We can't live without water。我们的生活离不开水。
7、As we know ， water is very important to man。我们知道，水是非常重要的人。
8、The short life of the flowers away， leaving behind the beauty is forever。带走的花儿生命短暂，留下的美丽才是永远。
9、It's our duty to save water。节约水是我们每个人的责任。
10、It's everyone's duty to love and protect the environment。这是每个人的责任，爱护和保护环境。
11、Care plants，please。请爱护花草。
12、Save Food。节约粮食。
13、Save on electricity。节约用电。
14、Governments of many countries have established laws to protect the air， forests and sea resources and to stop environmental pollution。许多国家制定了法律来保护大气、森林和海洋资源，制止环境污染。
15、How to pretect our enviroment has been one of the most difficult problem in the world。如何保护环境已经成为世界最大难题之一。
16、We should not spit in a public place/ cut down the trees。我们不应该在公共场所吐痰/砍伐的树木。
17、Environmental law heavily intertwined with administrative law。环保法与行政法紧密联系在一起。
18、Planting trees Trees are very helpful and important for us。树对我们人类是多么的重要和有用。
19、We should plant more and more trees in order to live better and more healthy in the future。为了将来我们的生活过得更好、更加健康我们应该种更多的树。
20、We should not throw litter onto the ground。我们不应该往地上扔垃圾。
21、Without the shade from trees， Earth would get too hot to live on。没有了树荫，地球将会变得太热而不能生存。
22、Let's do our best to make it more beautiful。让我们尽力让它更美丽。
23、No smoking。禁止吸烟。
24、Right side，please。请靠右行。
25、We are using up our natural resources and at the same time polluting our environment with dangerous chemicals。 If we continue to do this， life on earth cannot survive。我们一边耗尽自然资源，一边产生化学污染物。如果继续这样做的话，地球上的生物将难以生存。
26、Discharge pipes directly take pollutants away from the plant into the river。排泄管道直接将污染物从工厂排入河流。
27、In addition to the photos， nothing taken away； In addition to the footprints， nothing left。除了相片，什么都不要带走；除了脚印，什么都不要留下。
28、Most environmental litigation involves disputes with governmental agencies。许多环保诉讼都涉及与**机构的争端。
29、It's everyone's duty to love and protect the environment。爱护和保护环境是每个人的责任和义务。
30、Save water，please。节约用水。
31、If we don't save water， the last drop of water will be a tear-drop of us。如果我们不节约水，那么最后一滴水也许会是我们人类的眼泪。
32、We are using up our natural resources and at the same time polluting our environment with dangerous chemicals。 If we continue to do this， life on earth cannot survive。我们一边耗尽自然资源，一边产生化学污染物。如果继续这样做的话，地球上的生物将难以生存。
33、No climbing。禁止攀爬。
34、Even worse， they pour dirty water in to rivers。更糟糕的是他们排放污水到河流里。
35、Turn off the light，please。请随手关灯。
36、Pollution is legally controlled and enforced through various federal and state laws。污染由联邦和州各种法规控制和强制执行。
37、we can't live without water。没有水我们就不能生存。
38、No one can live without water or air。没有人能离开水和空气生存。
39、Keep Silence。保持安静。
40、Save paper，please。节约用纸。
41、The amount of water which is suitable to drink is less and less。水的量是适宜的饮料是越来越少了。
42、We must pick up some rubbish and throw it into a dustbin。我们必须拿起一些垃圾，扔到垃圾桶它。
43、The rubbish will pullute the enviroment 。It is bed for our health。So please don't throw about the rubbish。垃圾污染环境，损害健康，不要到处扔垃圾
44、if everyone could make a big contribution to environmental protection， our home will become much more beautiful。如果每个人为环境保护作出一点贡献，我们的家园会变得更加美丽。
45、Many rivers and lakes are seriously polluted。很多河流湖泊已经受到严重污染。
46、As we know ， water is very important to man。我们知道，水对人类来说是非常的重要。
47、Something must be done to stop the pollution.人类必须采取一些措施来制止污染。
48、Handle with Care。小心轻放。
49、We need to protect Earth because it is our home。我们需要保护地球因为它是我们的家。
50、Environmental impact reports are required under many circumstances by federal and state law。根据联邦和州的法律规定，在许多情况下都要求提供环境影响报告书。
51、1Earth is our home， you rely on green。地球是我家，绿化靠大家。
52、Don't litter the floor。不随地扔垃圾。
53、1Save the earth， Our Only Home。保护地球，我们唯一的家。
54、Please shut the door after you。出入请关门。
55、They waste a lot of water in their daily life。日常生活中他们浪费很多水。
56、Protect Public Propety。爱护公共财物。
57、We should stop factories from producing harmful gases。我们应该阻止工厂生产有害气体。
58、But save square inch ground， stay with descendant Geng。但存方寸地，留与子孙耕。
59、But some people don't care about it。但是有些人却不关心或不在意。
60、Keep clean。保持清洁。
61、Treat kindly the Earth is to treat kindly oneself。善待地球就是善待自己。
62、Environmental problems directly affect the quality of people's lives。环境问题直接影响人们的生活质量。
63、Rescue the Earth is to rescue future。拯救地球就是拯救未来。
64、We should plant more flowers and trees。我们应该种更多的花和树。
65、Cameras are forbidden。禁止拍照。
66、We don't need to do big things—we can start out small。我们不需要做大事，我们可以从小事做起。
67、Now people pay more attention to how to pretend our environment 。With the development of science and technology，it becomes more important to pretend our environment。In china，prentending environment is very nomal in our life for the Olympic's coming or the people's sense of environmental pretection。环境保护是当今社会的一大热点问题。随着科技的发展，环保显得越来越重要。在中国，也许是奥运会的临近，也许是人们意识的崛起，环保已经成为我们身边一个普遍的存在了。
68、But some people don't care about it。但有些人不关心它。
69、We should plant more and more trees in order to live better and more healthy in the future。我们应该种更多的树，为了生活得更好，更健康的未来。
70、An act that is destructive to the environment may be criminalized by statute。破坏环境之行为可以被法律规定为犯罪。
71、Many rivers and lakes are seriously polluted。许多河流和湖泊受到严重污染。
72、The protection of trees， that is， to protect themselves。保护树木，就是保护自己。
73、Earth is our home， you rely on green。地球是我家，绿化靠大家。
74、In 1970 a federal agency was created to coordinate governmental action to protect environment。1970年，成立了一个联邦机构以协调**的环保行为。
75、No Cycling in the School。校内禁止骑车。
76、Keep the enviroment clean and tidy。We have only one earth。We should try our best to pretect it，make our home more and more beautiful。保持环境干净和整洁，我们只有一个地球，应该保护它，使我们的家园更加美丽。
77、Have green trees， have the pulse of the earth。树木拥有绿色，地球才有脉搏。
78、It“s our duty to protect our environment。它”是我们的责任来保护我们的环境。
79、If everyone makes contribution to protecting the environment， the world will become much more beautiful。如果人人都为保护环境作出贡献，(www。lzcn)世界将变得更加美丽。
80、Be quiet！禁止喧哗。
81、The waste water will pour into rivers，lakes and fields。It will harm the crops ，kill a large number of fish。废水流到河里，湖里和田野里，污染农作物，杀死大量的鱼。
82、Protecting the environment is every man's responsibility。保护地球环境是每一个人的责任。
83、Cherish the source of nature， totally make a living a life green。珍惜自然之源，共营生命绿色。
84、The law requires a detailed analysis of the potential impact on the environment of a proposed project。法律规定要对拟订项目对环境的潜在影响作详尽的分析。
85、Keep Away From Fire。切勿近火。
86、It's our duty to protect our environment。保护我们生存的环境是我们的责任和义务。
87、Please keep off the grass。不要践踏草坪。
88、They throw rubbish into rivers ， too。他们还乱扔垃圾到河流理去。
89、Trees are very helpful and important for us。树是非常有益的，对我们很重要。
90、The most important question in the world today is pollution。当今世界最重要的话题就是污染问题。
91、Something must be done to stop the pollution。必须采取某种措施来制止污染。
92、It is very important to take care of our environment。这是非常重要，我们要保护我们的环境。
93、We should take many measures to stop pollution。我们应该采取许多措施去停止污染。
94、Do not throw rubbish onto the ground。 Do not waste water. Use both sides of paper when you write. Stop using plastic bags for shopping. Make classrooms less noisy.不要在地上扔垃圾。不要浪费水。当你写字时要在纸的两面都要写。停止使用塑料袋去购物。减少教室里德吵闹声。