FS is a written short form of Foreign Service: the people a country sends abroad to speak for it — diplomats in embassies and consulates — and the office at home that looks after that work.

FS is a written short form of Foreign ServiceFS 是 Foreign Service（外交部門）的書面縮寫， the people a country sends abroad to speak for it — diplomats in embassies and consulates指一個國家派到國外代表它發言的人，也就是大使館、領事館裡的外交人員， and the office at home that looks after that work以及國內負責管理這項工作的機關。

In the United States, Foreign Service is almost a career name: you join the Foreign Service and may live for years in other countries.

In the United States, Foreign Service is almost a career name在美國，Foreign Service 幾乎算是一種職業的名稱， you join the Foreign Service and may live for years in other countries你加入 Foreign Service 之後，可能會在國外住上好幾年。

You meet FS in job ads, CVs, and government papers more than in spoken chat; people usually say the full words.

You meet FS in job ads, CVs, and government papers more than in spoken chat你比較常在徵才廣告、履歷和政府文件裡看到 FS，而不是在口語對話裡， people usually say the full words大家平常還是會說完整的字。

Though actually, the same two letters mean many other things in other worlds (a computer’s file system, full screen, and so on). In this use it is always about diplomacy, not computers.

Though actually, the same two letters mean many other things in other worlds不過其實這兩個字母在其他領域還有很多不同的意思， (a computer's file system, full screen, and so on)（像電腦的 file system 檔案系統、full screen 全螢幕等等）。 In this use it is always about diplomacy, not computers但在這個用法裡，講的一定是外交，不是電腦。