The exhibition tells us we should do something to stop air pollution.

这场展览告诉我们应该采取措施来防止空气污染。

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The exhibition tells us why we should do something to stop air pollution.

这个展览告诉我们为什么要采取行动阻止大气污染。

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We must do something to stop pollution.

我们必须做些什么来阻止污染。

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But another possibility is once you do something it's kind of hard to stop.

但也有可能是因为,婴儿很难使自己的惯性动作停下来

耶鲁公开课 - 心理学导论课程节选

We have to do something to stop these staggering deficits and do something to reverse what's going on in Iraq.

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Sprint was desperate to do something to stop the outflow of customers who just wanted iPhones.

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"It is the responsibility of the City Council leadership to do something to stop it and it hasn't happened, " Mr. de Blasio said.

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