speaking tube
短语n. 房间与房间之间的通话管（等于speaking trumpet）
词形变化
speaking tubes
复数
speaking tubes
别名
tube
释义与例句
n.
-
1.
A tube for conveying speech, especially from one room to another at a distance.
1914, Ernest Bramah, Max Carrados […] for the next twenty minutes they were consigned to the general office while Mr Carlyle fumed and displayed his watch ostentatiously. At last a clerk slid off his stool by the speaking-tube and approached them.