英语词汇“key telephone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	key telephone
释义	key telephone noun A telephone operated by means of buttons on a keypad and connected to several telephone lines to form an interconnected system, typically in a business or other organization; originally and frequently attributive, especially in key telephone system. Origin 1950s.
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key telephone