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 think out some ways to stop polluting the river, and call on people to fight against pollution.

我认为我们应该想出一些办法制止他们污染这条河，并号召人们同污染做斗争。

youdao

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

我认为我们应该想出一些办法制止他们污染这条河，并号召人们同污染做斗争。

youdao