expatiate

expatiate
[ɪkˈspeɪʃɪeɪt, ɛk-]
verb
  1. [no obj.]speak or write at length or in detail
    细说;详述
    she expatiated on working-class novelists.
    她详细讲述了工人阶级小说家。
派生
expatiation
noun
语源
  1. mid 16th cent. (in the sense 'roam freely'): from Latin exspatiari 'move beyond one's usual bounds', from ex- 'out, from' + spatiari 'to walk' (from spatium 'space')
英语宝典
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