名词
中文翻译：计时器
同义词：
['chronometer', 'clock', 'chronograph例句：1. The tachograph was used to measure the speed of horses.（计时器用于测量马匹的速度。）2. She was late for work because she forgot to set her tachograph.（她上班迟到了，因为她忘了设置她的计时器。）3. The tachograph showed that the car had been traveling at a steady speed for over an hour.（计时器显示汽车以恒定速度行驶了一个多小时。）']
例句：
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1. The tachograph was used to measure the speed of horses.
计时器用于测量马匹的速度。
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2. She was late for work because she forgot to set her tachograph.
她上班迟到了，因为她忘了设置她的计时器。
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3. The tachograph showed that the car had been traveling at a steady speed for over an hour.
计时器显示汽车以恒定速度行驶了一个多小时。