We should try our best to fight against pollution.
我们应该尽最大努力与污染作斗争。
They might wonder if Christo was making an announcement against pollution.
他们可能想知道克里斯托是不是在发表反对污染的声明。
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。
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