verb · to leave something behind, such as a physical object, a message, or an impression

他的精彩演讲给在场的听众留下了深刻的印象。

verb, pronoun · to stay behind or remain in a place after others have departed

大家都走了，只有他一个人留下了。

verb, measure word · to not let someone go; to ask someone to stay for a period of time

经理留下他谈点儿工作上的事。

verb · to keep or retain something rather than giving it away or discarding it

请把这张照片留下做个纪念吧。