A transceiver is one machine that can both send and receive radio signals. Older radio equipment often kept the two jobs in separate boxes — one to transmit, one to receive — so when engineers built them into a single unit they needed a name for it, and they simply pushed the two words together. Everyday examples: the walkie-talkie a security guard carries, the radio set on a fishing boat, a ham radio operator's rig.

A transceiver is one machinetransceiver指的是一台機器 that can both send and receive radio signals可以同時發送和接收無線電訊號。Older radio equipment often kept the two jobs in separate boxes早期的無線電設備常常把發送跟接收這兩個功能分成兩個獨立的機箱 — one to transmit, one to receive一個負責transmit（發送），一個負責receive（接收） — so when engineers built them into a single unit所以當工程師把它們合成一台機器時, they needed a name for it需要一個名字, and they simply pushed the two words together就直接把兩個字拼在一起。Everyday examples日常生活的例子: the walkie-talkie a security guard carries保全帶的對講機, the radio set on a fishing boat漁船上的無線電機組, a ham radio operator's rig業餘無線電玩家的設備。

The word is also used for the small part inside networking equipment that sends and receives data — the little plug-in module in a network switch that turns electricity into light for a fibre cable is called a transceiver, and IT people use the word this way daily.

The word is also used for the small part inside networking equipment that sends and receives data這個字也用來指網路設備裡負責收發資料的小零件 — the little plug-in module in a network switch that turns electricity into light for a fibre cable網路交換器裡那個把電訊號轉成光訊號、給光纖線用的小插件模組 is called a transceiver就叫transceiver, and IT people use the word this way daily資訊人員每天都這樣用這個字。

It is a technical word: it lives in manuals, spec sheets and the speech of engineers and radio hobbyists, not in ordinary conversation. Someone holding one in daily life just calls it a radio or a walkie-talkie.

It is a technical word這是一個技術性的字: it lives in manuals, spec sheets and the speech of engineers and radio hobbyists它出現在說明書、規格表，還有工程師跟無線電愛好者的對話裡, not in ordinary conversation不是日常會話會用到的字。Someone holding one in daily life一般人日常生活裡拿著一個的話 just calls it a radio or a walkie-talkie就直接叫它radio（無線電）或walkie-talkie（對講機）。