| 单词 | tube-whistle | 
| 释义 | > as lemmastube-whistle   tube-whistle  n. a whistle having a tube for the conveyance of the sound in signalling to a distant floor or apartment of a building. ΚΠ 1886    Boy's Own Paper 9 Oct. 31/1  				He whistles down by means of a tube-whistle. < as lemmas | 
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