on the staff 为什么是“on”？“on the staff”是什么意思？ - 知乎 On (the) staff Idiom US : Working as a member of the group of people employed by an organization or business 例子： We have a full time nurse on staff He's been on the staff for 25 years 在工作场合下，staff是蛮有用的词。看它的动词形式的用法语境如下： Short staffed under staffed：人手不够。(= short handed)