英语词汇“speaking tube”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	speaking tube
释义	speaking tube noun A pipe for conveying a person’s voice from one room or building to another.She would have had to use a speaking tube and something like a gas mask while shouting very loudly.... He didn't do a great deal himself, apart from shouting down an ancient speaking tube to the unseen troglodytes who worked in the wine cellars far below. His bed is still there, together with the speaking tubes that kept him in touch with goings-on at the bridge.
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