water polo stop watch

例句：

1. 1.The water polo team won the championship with a time of 12 minutes and 30 seconds.
   水球队以12分30秒的成绩赢得了冠军。
2. 2.During the game, the referee used the stop watch to keep track of the time.
   比赛中，裁判使用停表来记录时间。
3. 3.The stop watch was an essential tool for the athletes during the competition.
   停表是运动员在比赛中的重要工具。