1、No one can live without water or air。没有人能离开水和空气生存。
2、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。
3、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。
4、In addition to the photos， nothing taken away； In additionto 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。
5、We don't need to do big things—we can start outsmall。我们不需要做大事，我们可以从小事做起。
6、Many rivers and lakes are seriously polluted。许多河流和湖泊受到严重污染。
7、Earth is our home， you rely on green。地球是我家，绿化靠大家。
8、But some people don't care about it。但有些人不关心它。
9、Turn off the light，please。请随手关灯。
10、1Earth is our home， you rely on green。地球是我家，绿化靠大家。
11、Keep Silence。保持安静。
12、Handle with Care。小心轻放。
13、Save on electricity。节约用电。
14、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。
15、Rescue the Earth is to rescue future。拯救地球就是拯救未来。
16、Please shut the door after you。出入请关门。
17、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。
18、We should plant more and more trees in order to live better and morehealthy 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。
19、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。
20、Treat kindly the Earth is to treat kindly oneself。善待地球就是善待自己。
21、Please keep off the grass。不要践踏草坪。
22、Trees are very helpful and important for us。树是非常有益的，对我们很重要。
23、But some people don't care about it。但是有些人却不关心或不在意。
24、As we know ， water is very important to man。我们知道，水是非常重要的人。
25、No smoking。禁止吸烟。
26、Governments of many countries have established laws to protect theair， 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。
27、Environmental impact reports are required under many circumstancesby 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。
28、Save Food。节约粮食。
29、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。
30、Keep clean。保持清洁。
31、Protecting the environment is every man's responsibility。保护地球环境是每一个人的责任。
32、1Save the earth， Our Only Home。保护地球，我们唯一的家。
33、We should plant more flowers and trees。我们应该种更多的花和树。
34、Care plants，please。请爱护花草。
35、An act that is destructive to the environment may be criminalized bystatute。破坏环境之行为可以被法律规定为犯罪。
36、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。
37、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。
38、Without the shade from trees， Earth would get toohot to live on。没有了树荫，地球将会变得太热而不能生存。
39、They throw rubbish into rivers ， too。他们还乱扔垃圾到河流理去。
40、In 1970 a federal agency was created to coordinate governmentalaction to protect environment。1970年，成立了一个联邦机构以协调政府的环保行为。
41、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。
42、The rubbish will pullute the enviroment 。It is bedfor 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
43、we can't live without water。没有水我们就不能生存。
44、Let's do our best to make it more beautiful。让我们尽力让它更美丽。
45、if everyone could make a big contribution to environmentalprotection， 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。
46、Have green trees， have the pulse of the earth。树木拥有绿色，地球才有脉搏。
47、Keep the enviroment clean and tidy。We have only oneearth。We should try our best to pretect it，make our home moreand 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。
48、We should plant more and more trees in order to live better and morehealthy 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。
49、Pollution is legally controlled and enforced through various federaland state laws。污染由联邦和州各种法规控制和强制执行。
50、We should take many measures to stop pollution。我们应该采取许多措施去停止污染。
51、Cherish the source of nature， totally make aliving a life green。珍惜自然之源，共营生命绿色。
52、It“s our duty to protect our environment。它”是我们的责任来保护我们的环境。
53、Something must be done to stop the pollution.人类必须采取一些措施来制止污染。
54、They waste a lot of water in their daily life。日常生活中他们浪费很多水。
55、Environmental law heavily intertwined with administrative law。环保法与行政法紧密联系在一起。
56、Cameras are forbidden。禁止拍照。
57、The federal government promulgated the Clean Water Act and the CleanAir Act。联邦政府颁布了《水清洁法》和《空气清洁法》。
58、No Cycling in the School。校内禁止骑车。