wear out
使用过多而造成物品损坏或不能使用的状态
口语·表达极度疲劳
英文释义
to become exhausted or tired, usually as a result of physical or mental exertion
例句
I've been running all day, and I'm completely worn out.
典故来源
源自物理磨损概念，引申为精力耗尽，16世纪起用于形容人极度疲劳。