expatiate
/ekˈspeɪʃɪeɪt/verb
no obj.
- speak or write at length or in detail细说; 详述; 阐述：
she expatiated on working-class novelists.
她详细讲述了工人阶级小说家。
派生词
expatiation
noun词源
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'）.