[in sing.]the area covered by something 面积;区域 an enclosure ten acres in extent. 面积达10英亩的围场。 ■the degree to which something has spread; the size or scale of something 范围;程度;宽度;大小 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 程度 everyone will have to compromise to some extent. 每个人都必须做出某种程度的让步。 they altered the document to such an extent that it contained little in the way of new policy. 他们将文件作了这样大的修改,使得里面属于新政策的东西所剩无几。
语源
Middle English (in the sense 'valuation of property, especially for taxation purposes'): from Anglo-Norman French extente, from medieval Latin extenta, feminine past participle of Latin extendere 'stretch out' (see extend)