harp on
反復(fù)提及或強(qiáng)調(diào)某件事情，尤其是讓人討厭的或重復(fù)的事情
口語·表達(dá)抱怨或厭煩
英文釋義
to persistently dwell on or discuss a particular subject, often in a critical or complaining manner
例句
My dad always harps on about me cleaning my room. It's so annoying!
典故來源
源自豎琴（harp）反復(fù)撥弦的動作，比喻像彈琴一樣不停重復(fù)某個話題。