There was enough electricity to power a calculator . the teacher also demonstrated with a stopwatch and a buzzer 发出来的电足够发动一个计算器。这个教师还用一个跑表和蜂鸣器来进行了说明。
4.
At the lowest levels of competition , such as youth and high school meets , officials start and time events with a starting pistol and handheld stopwatches 在最基层的比赛中,比如青少年赛和高校比赛中裁判们用发令抢和手中的跑表来裁决比赛。
5.
Produce software timer and stopwatch functions , but can also set a limit on the number of alarm clocks . the bacteria can be achieved through the use of multiple users set up , for example the user can be de 此款软件具有计时器和跑表功能，而且可以设定不限数目的闹钟，用户通过使用可以实现多重闹铃的设置，比如用户可以自定义在指定的某年某日某时，可以通过播放声音闪动指示灯和使用震动来提示，而且附带倒计时软件和多功能的跑表，可以使用
