被任命管事的人
交出去的是一整個機關的管理權，接下來的人就成了首長。這一組的共同點是：權力來自任命，不是選舉，也不是自己爭來的。
noun · B2
A senior official who is officially in charge of a government department or a public service. Which job the title names depends on the country.
局長；署長；專員
核心畫面
Commissioner can be pictured around a single moment: a job being handed over. Someone holds a task, a department, or a question that needs answering, and passes it to another person to carry. The one who takes it and is answerable for it is a commissioner — whether that job is running the water department, sitting on a panel of five, or heading a city police force. Look at the same moment from the other side and you see the fourth meaning: the person doing the handing over.
commissioner 可以想成一個「把任務交出去」的瞬間。有人手上有一件事——一個部門、一份調查、一個要回答的問…更多收起
commissioner 可以想成一個「把任務交出去」的瞬間。有人手上有一件事——一個部門、一份調查、一個要回答的問題——把它交到另一個人手上。接下來、並且要負責的那個人，就是 commissioner。不管他接的是水利局、是五人小組裡的一個位子，還是一整個城市的警察。把同一個畫面從另一邊看，就是第四個意思：交出去的那一方。From the word’s history
The supplied Wiktionary etymology tree runs from Latin committere (con- plus mittere, to send or entrust) to commissio and the Medieval Latin agent form in -arius. The idea of entrusting a task is still the thread through all the modern uses.
來源的 Wiktionary 詞源樹從拉丁文 committere（con- 加 mittere，「交託、送出」）走到 commissiō，再到中世紀拉丁文的 -arius（做某事的人）。「把事情交託出去」這個意思，今天還貫穿著這個字的每一種用法。
Wiktionary (kaikki extract 3f6f69a190036ae4), entry 'commissioner': etymology tree Latin committō > commissiō > -ārius.
Three branches
委員會裡的一個位子
這次交出去的不是一個機關，而是一件要共同處理的事，而且交給的是一群人。所以每個人只拿到其中一個位子。
noun · C1
One of the people who sit on a commission — an official group set up to run something, to decide something, or to look into a question and report on it.
委員
把工作交出去的那一方
同一個交接動作，站到另一端來看：不是接下任務的人，而是提出要求、付錢的人。
noun · C1
The person or group who asks for a piece of work to be made and pays for it — for example a painting, a building, or a piece of music.
委託人；出資訂製的人