Speaking-tubes
(speaking-tube 的复数) n. 房间与房间之间的通话管（等于speaking trumpet）
🧩 词语组成解析
speaking
['spi:kiŋ]
n. 说话;讲话;谈话;演讲;
adj. 演讲的;富于表情的;（肖像）栩栩如生的;雄辩的;
v. 讲，谈(speak的现在分词 );
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
Do what you are told.
叫你怎么做，你就怎么做。
What is done by night appears by day.
若要人不知，除非己莫为。
He could hear shouting in the camp itself.
他听得军营里面的喧闹声。