1·We have a moral obligation to protect the environment.
我们有道义责任保护环境。
—— 《牛津词典》
2·It can protect the environment.
它可以保护环境。
3·It would help to protect the environment.
这有助于保护环境。
4·I think we must do something to protect the environment.
我认为我们必须做些什么来保护环境。
5·The money from tourism is used to protect the environment.
旅游业赚的钱用来保护环境。
6·Recycling is one way to protect the environment; reusing is another.
骑自行车是一种保护环境的方法，再利用又是另外一种办法。
7·If we don't act to protect the environment, we will live to regret it.
如果我们现在不采取行动保护环境，我们会遗憾一辈子。
8·Everyone must assume his share of the responsibility to protect the environment.
每个人都必须承担起保护环境的责任。
9·It's time we got rid of these bad habits and take action to protect the environment.
我们是时候改掉这些坏习惯并且行动起来保护环境了。
10·My position on this problem is that we should do whatever we can to protect the environment.
我对于这个问题的观点是我们应该竭尽所能去保护环境。