timer
/ˈtaɪmə(r)/noun
1
- an automatic mechanism for activating a device at a preset time定时器：
a video timer.
录像机定时器。
1.1
- a person or device that measures or records the amount of time taken by a process or activity计时员; 计时器; 记时员; 记时器。
2
- in combination used to indicate how many times someone has done something第…次做事的人：
for most first-timers the success rate is 45 per cent.
就大部分第一次做的人而言, 成功率是45%。