A crane had to be used to haul the car out of the stream.

不得不用了一台起重机把轿车从河里拉出来。

《柯林斯英汉双解大词典》

Some memory has to be used to keep track of all those reverse mappings.

不得不用一些内存来保持对所有那些反向映射的追踪。

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But there are doubters who think that more community sentences may have to be used to prevent overcrowding.

但是，怀疑者们认为，更多的社区审判也许会被迫被用来防止过于拥挤的情况。

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