[mass noun]the action of depriving someone of membership of an organization 开除;除名 expulsion from the union. 从工会除名。 [count noun]a rise in the number of pupil expulsions. 被开除学生人数的增加。 ■the process of forcing someone to leave a place, especially a country 逐出;驱逐(尤指驱逐出境) the most brutal chapter of the expulsion of Jews from Berlin. 讲述犹太人被逐出柏林的最残忍的那一章。 ■the process of forcing something out of the body 排出体外
派生 expulsive adjective 语源
late Middle English: from Latin expulsio(n-), from expellere 'drive out' (see expel)