1、They throw rubbish into rivers , too.他們還亂扔垃圾到河流理去。

2、Right side,please.請(qǐng)靠右行。

3、It's our duty to save water.節(jié)約水是我們每個(gè)人的責(zé)任。

4、Something must be done to stop the pollution.人類必須采取一些措施來制止污染。

5、It's everyone's duty to love and protect the environment.愛護(hù)和保護(hù)環(huán)境是每個(gè)人的責(zé)任和義務(wù)。

6、Let’s do our best to make it more beautiful.讓我們盡力讓它更美麗。

7、We don't need to do big things—we can start out small.我們不需要做大事，我們可以從小事做起。

8、The federal government promulgated the Clean Water Act and the Clean Air Act.聯(lián)邦政府頒布了《水清潔法》和《空氣清潔法》。

9、Protecting the environment is every man's responsibility.保護(hù)地球環(huán)境是每一個(gè)人的責(zé)任。

10、We don’t need to do big things—we can start out small.我們不需要做大事，我們可以從小事做起。

11、if everyone could make a big contribution to environmental protection, our home will become much more beautiful.如果每個(gè)人為環(huán)境保護(hù)作出一點(diǎn)貢獻(xiàn)，我們的家園會(huì)變得更加美麗。

12、The most important question in the world today is pollution.當(dāng)今世界最重要的話題就是污染問題。