The oceans are important to all animals on the Earth. We must keep them clean. We must stop polluting them.

海洋对于所有的地球上的动物都有着极其重要的意义。我们要保证清洁，禁止污染。

youdao

I think we should figure out some ways to stop people from polluting the river and call on them to fight against pollution.

我认为我们应该要想出一些办法来阻止人们污染这条河，并号召人们同污染做斗争。

youdao

I think we should figure out some ways to stop people from polluting the river and call on them to fight against pollution.

我认为我们应该要想出一些办法来阻止人们污染这条河，并号召人们同污染做斗争。

youdao