常見例句His deep knowledge of the historical background enabled him to expatiate upon the significance of the movement.他對於歷史背景的深刻了解使他能夠詳細(xì)闡述這場運(yùn)動的意義。The chairman expatiated for two hours on his plans for the company.董事長用兩小時(shí)闡述了公司的槼劃。 返回 expatiates