售票员吹哨子, 电车停了下来.The conductor blew his whistle, and the tram stopped.警察吹哨子让汽车停下来.The policeman whistled for the car to stop.老师吹哨子开始了赛跑.The teacher blew a whistle to start the race....
军团病是一种非常严重的、有时可以致命的肺炎.Legionnaires'disease is a serious and sometimes fatal form of pneumonia.空调系统 的输送管则是军团病细菌的绝佳温床.Air - conditioning ducts create a perfect Legionnaire's disease bacteria.由于大多数死者都是军团成员,因此称为军团病...