词典释义：
the area covered by something
地域
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an enclosure ten acres in extent .一个占地１０英亩的围场。
the degree to which something has spread; the size or scale of something
范围；程度；规模；大小
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the extent of global warming .全球变暖的程度。
the amount to which something is or is believed to be the case
…的程度
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everyone will have to compromise to some extent 每个人都必须作出某种程度的让步
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they altered the document to such an extent that it contained little in the way of new policy .他们将文件改得使里面属于新政策的东西所剩无几。
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to some extent = to a certain extent 在某种程度上；在一定程度上
真题例句：
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to a large extent 在很大程度上
真题例句：
"Middle English （in the sense ‘valuation of property, especially for taxation purposes’）： from Anglo-Norman French
