專幹某件事的人
把「專賣某種貨」的結構借去講人：他經手的不是商品，而是某種行為，語氣帶著調侃。
avid doer of something · noun · B2
someone who often does a certain activity — used in phrases like speed merchant; informal British English.
…迷
核心畫面
Picture someone whose whole living is buying and selling — goods come in, goods go out, and the trade itself is the job. That is a merchant. Modern English it to a dealer in one particular commodity, and British slang stretches it to a person who deals in one particular behaviour.
可以想成：一個靠買進賣出過活的人——貨進來，貨出去，做買賣本身就是他的職業。這就是 merchant。現代英文把它縮…更多收起
可以想成：一個靠買進賣出過活的人——貨進來，貨出去，做買賣本身就是他的職業。這就是 merchant。現代英文把它縮小成「專賣某一種東西的商家」，而英式俚語又把它玩開來，用來指一個人專門「幹某種事」。所以看到這個字，先看它前面掛的是貨品還是行為。From the picture
Also in this word
trader (historical) · noun · B1
someone who buys and sells large amounts of goods — often used in older stories or history books.
商人
dealer (specific goods) · noun · A2
someone whose job is to buy and sell one kind of goods, such as wine, coal, or wood, or a small company that does this.
專賣商
原始詞典資料7 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。
Merchantname
- 1
A surname.
merchantnoun/ˈmɜːtʃənt/
- 1
A person who traffics in commodities for profit.
- 2
The owner or operator of a retail business.
- 3
A trading vessel; a merchantman.
- Every day, some sailor's wife, / The masters of some merchant, and the merchant, / Have just our theme of woe.
- 4
derogatoryinformalSomeone who is noted for a stated type of activity or behaviour.
- He's some kind of speed merchant — he drives way too fast.
- Goal merchant Smith scored twice again in the match against Mudchester Rovers.
- 5
obsoleteA supercargo.
merchantverb/ˈmɜːtʃənt/
- 1
As a resident of a region, to buy goods from a non-resident and sell them to another non-resident.
- a merchanting service
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。