1、we can't live without water.

1、没有水我们就不能生存。

2、Governments of many countries have established laws to protect the air, forests and sea resources and to stop environmental pollution.

2、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。

3、No Cycling in the School.

3、校内禁止骑车。

4、Be careful.

4、请小心。

5、Save on electricity.

5、节约用电。

6、Environmental problems directly affect the quality of people's lives.

6、环境问题直接影响人们的生活质量。

7、Keep Silence.

7、保持安静。

8、Let's do our best to make it more beautiful.

8、让我们尽力让它更美丽。

9、It's everyone's duty to love and protect the environment.

9、爱护和保护环境是每个人的责任和义务。

10、They throw rubbish into rivers, too.

10、他们还乱扔垃圾到河流理去。