an automatic mechanism for activating a device at a preset time
定时器
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a video timer .录像机定时器。
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。
[in combination]used to indicate how many times someone has done something
第…次做事的人
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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%。