speaking tubes

英 美
  • [医]传音筒
  • speaking adj.发言的;能说的;能说明问题的;栩栩如生的动词speak的现在分词.
  • tubes n.管子;管状物;地铁;电视;管状器官v.提供或装上管子
名词 speaking tube:
  1. a tube for conveying the sound of a voice from one room to another