例:Mary shuther book and put it down on the table. 玛丽合上书,把它放在了桌子上。 相关俚语:keep sb's mouth shut 保持缄默,守口如瓶 例:I don't know whether to tell him what I know or keep my mouth shut. 我不知道是该告诉他我所知道的,还是保持缄默。