常見例句His deep knowledge of the historical background enabled him to expatiate upon the significance of the movement.他對于歷史背景的深刻了解使他能夠詳細闡述這場運動的意義。The chairman expatiated for two hours on his plans for the company.董事長用兩小時闡述了公司的規(guī)劃。 返回 expatiating