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1·In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.

在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。

2·Once known, it spread rapidly, driving out water clocks but not solar dials, which were needed to check the new machines against the timekeeper of last resort.

一旦被人所知，它就迅速传播开来，替代了水钟，但却没有替代日晷，日晷被用来将新机器与原来的计时方法进行对照检查。

3·All this was compatible with older devices so long as there was only one authoritative timekeeper; but with urban growth and the multiplication of time signals, discrepancy brought discord and strife.

所有这些都与旧的设备兼容，只要只有一个权威的计时器；但随着城市的发展和时间信号的倍增，报时的差异导致了不和与冲突。

4·The watch is an excellent timekeeper.

这个表计时相当精确。《新英汉大辞典》

5·The factory timekeeper keeps account of the hours of work done.

工厂计时员记录工时。《新英汉大辞典》

6·This clock is a good timekeeper.

这钟是一个很好的定时器。

7·Timekeeper by Rolex.

计时员由劳力士。

8·She is going to be a timekeeper at the track meet.

她将在田径比赛中担任计时员。

9·The young timekeeper came up. He said, I'm sorry, Dad.

那个年轻的计时员走上前，说：“爸爸，对不起。

10·Everybody looks agape, also forget even timekeeper press stopwatch.

大家都看得目瞪口呆，连计时员也忘记按下秒表了。

计时员

1·Everybody looks agape, also forget even timekeeper press stopwatch.

大家都看得目瞪口呆，连计时员也忘记按下秒表了。

2·Timekeeper by Rolex.

计时员由劳力士。