A person you work with. It is warm and informal — the -mate ending makes it feel friendly, like a person you would happily have lunch with, not just a name on the team list. Mostly British and Australian; Americans rarely say it and would say coworker or colleague.

a person跟你一起工作的人 you work with. it它 is warm and informal溫暖又不正式 — the -mate ending字尾的-mate makes it feel friendly讓它聽起來很親切, like a person you would happily have lunch with像是你會樂意一起吃午餐的人, not just a name on the team list而不只是團隊名單上的一個名字. mostly British and Australian主要是英國和澳洲人在用; Americans美國人 rarely say it很少這樣說 and would say會說 coworker or colleaguecoworker或colleague.

The three words differ in feel. Colleague is the formal one and hints at professional or office work — lawyers and teachers have colleagues. Coworker is neutral and works everywhere, and is the safe choice for Americans. Workmate is the friendly, spoken one, and is used most about hands-on or shift jobs: factory, warehouse, shop, kitchen.

the three words這三個字 differ in feel給人的感覺不一樣. colleaguecolleague is the formal one是比較正式的 and而且 hints at professional or office work帶有專業或辦公室工作的意味 — lawyers and teachers律師和老師 have colleagues會有colleagues. coworkercoworker is neutral and works everywhere是中性的，到哪裡都能用, and而且 is the safe choice for Americans是美國人保險的選擇. workmateworkmate is the friendly, spoken one是比較親切、口語的, and而且 is used most about hands-on or shift jobs最常用在動手做或輪班的工作上: factory, warehouse, shop, kitchen工廠、倉庫、店裡、廚房.

"My workmates threw me a party" sounds natural; "my workmates published a paper" sounds odd. It says nothing about rank — your workmate can be older or younger than you.

"My workmates threw me a party"『My workmates threw me a party（我的workmates幫我辦了一個派對）』 sounds natural聽起來很自然; "my workmates published a paper"『my workmates published a paper（我的workmates發表了一篇論文）』 sounds odd聽起來就怪怪的. it它 says nothing about rank跟階級無關 — your workmate你的workmate can be older or younger than you可以比你年長，也可以比你年輕.

In Taiwan, note that you will hear coworker far more in business English classes and emails, so treat workmate as something to understand rather than something you must use.

in Taiwan在台灣, note that要注意的是 you你 will hear coworker far more聽到coworker的機會多得多 in business English classes and emails在商用英文課和email裡, so所以 treat workmate as something to understand把workmate當成聽懂就好的字 rather than something you must use而不是一定要會用的字.