平台上的警卫吹响了哨子.On the platform, the guard blew his whistle.裁判吹响哨子，比赛才算结束。The game's not over till the ref blows the whistle.裁判在比赛结束时吹响了哨子.The referee blew a whistle at the end of the game....
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....