英语词汇“closed-circuit 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	closed-circuit telephone
释义	closed-circuit telephone closed-circuit telephone A telephone on a circuit that provides telephonic communication within a limited area, such as a single building; it accepts no incoming calls from the outside nor can calls be made to the outside. Also called a house telephone or house phone.
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