Renewable sources of energy must be used.

可再生的能源必须利用。

《柯林斯英汉双解大词典》

He indicated that the little house must be used as a conveyance.

他指出那座小房子必须用作交通工具。

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To collect as wide a range of species as possible, several methods must be used.

为了收集尽可能广泛的物种，必须使用几种方法。

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So the fires to make containers from volcanic clay must be hotter than those used for non-volcanic clay.

VOA: special.2009.09.14

He must know how to use religious passions and sentiments but not be used by them.

他必须懂得如何利用宗教热情以及,宗教情绪而不是被它们所控制。

耶鲁公开课 - 政治哲学导论课程节选

The new prince, as we've seen, must know how to use religion but needs to learn how not to be used by religion, must not become a dupe of the religious.

正如我们所看到的，这种新型君主必须知道,如何去利用宗教而不是被宗教所利用,必须避免成为受宗教愚弄摆布的对象。

耶鲁公开课 - 政治哲学导论课程节选

Perhaps a bit sad that money must be used to induce greater participation and effort?

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Second, any government funding or profits earned must be used to lower premiums, expand benefits or expand enrollment.

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To qualify, a home office must be used regularly and exclusively for business.

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