坐在主位、主事的人
兩個意思其實是同一個畫面的大小版本：都是「坐在主位、負責掌舵的人」，差別只在掌舵的範圍是一場會議還是一整間公司。
committee chairperson · noun · B1
The person who leads a meeting or is in charge of a committee or group.
主席
核心畫面
Picture a meeting where one person sits in 'the chair' — the seat of authority — and runs the whole thing: deciding who speaks, keeping order, steering toward a decision. The word literally puts a person (man) in that chair, and from there it grows to mean whoever sits at the very top of an organization.
可以想成一場會議裡，有一個人坐在「那把椅子」上——也就是主位、有權力的位子——由他來主持全場：決定誰發言、維持秩序、…更多收起
可以想成一場會議裡，有一個人坐在「那把椅子」上——也就是主位、有權力的位子——由他來主持全場：決定誰發言、維持秩序、把大家帶到結論。這個字字面上就是把一個人（man）放進那把椅子（chair）。從「會議裡坐主位的人」再放大，就是坐在整個組織最高位子的人。From the word’s history
Formed transparently from 'chair' (the seat of authority, the one who presides) + 'man'; the chair has stood for the position of the presiding officer since the 17th century.
這個字是由 chair（主持人的座位、主位）加上 man（人）直接組成的；用「椅子」代表主持人這個職位的用法，從十七世紀就有了。
Online Etymology Dictionary (etymonline.com), entry 'chairman'
One branch
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
chairmannoun/ˈtʃɛːmən/
- 1
A person presiding over a meeting, sometimes especially a man. (Compare chairwoman, chairperson, chair.)
- 2
The head of a corporate or governmental board of directors, a committee, or other formal entity.
- When I got ready to leave, why, Chairman Mao came down to the plane. Chairman Mao gave me some Chinese rugs and told me that I was the only prisoner of war that had ever come through there from North China.
- Unsurprisingly, the Group was highly critical of the BTC's organisation and finances, and this prompted Marples to bring forward the Transport Act 1962, which created BR as a standalone entity with its own Board, headed by a full-time chairman. Beeching accepted this latter position, and initially became the BTC chairman in June 1961.
- 3
historicalSomeone whose job is to carry people in a portable chair, sedan chair, or similar conveyance.
- Mr Western entered; but not before a small wrangling bout had passed between him and his chairmen; for the fellows, who had taken up their burden at the Hercules Pillars, had conceived no hopes of having any future good customer in the squire […]
- Mr. Winkle, catching sight of a lady's face at the window of the sedan, turned hastily round, plied the knocker with all his might and main, and called frantically upon the chairman to take the chair away again.
chairmanverb/ˈtʃɛːmən/
- 1
To serve as chairman.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。