We need more laws to stop pollution.
我们需要制定更多法律来防止污染。
We should work together to stop pollution.
我们应该一起努力制止污染。
We must take action to stop pollution.
我们必须采取措施阻止污染。
We must take measures to stop pollution.
我们必须采取措施制止污染。
Man is trying to find ways to stop pollution.
人类正努力寻找制止污染的方法。
What can you do to stop pollution?
停止污染你能做点什么？
I think it important to stop pollution.
我认为制止污染很重要。
Something must be done to stop pollution.
必须采取措施来停止污染。
Measures must be taken to stop pollution.
必须采取措施制止污染。
Measures should be taken to stop pollution.
该采取措施制止污染了。
What measures shall we take to stop pollution?
我们采取什么措施来停止污染？
We should take many measures to stop pollution.
我们应该采取许多措施去停止污染。
It's time that we did something to stop pollution.
到了我们采取行动制止污染的时候了。
It is time that we did something to stop pollution.
该我们做些什么制止污染的时候了。
Some effective measures must be taken to stop pollution.
我们必须采取有效措施来治理污染。
Stop pollution and save water, otherwise, we cannot survive on the earth.
停止污染并节约用水，否则，我们无法在地球上生存。
Stop pollution and save water, otherwise, we cannot survive on the earth.
请停止污染并节约用水，否则，我们不能再在地球上生存。
Stop pollution and save water, otherwise, we cannot survive on the earth.
请停止污染并节约用水，否则，我们不能再在地球上生存。
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