名词
中文翻译：计时器
同义词：
['chronograph', 'stopwatch例句：1. The chronometer was accurate to the second.（这个计时器非常准确，到秒。）']
例句：
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1. The chronometer was accurate to the second.
这个计时器非常准确，到秒。
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2. He used his chronometer to measure the distance.
他用他的秒表测量了距离。
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3. The chronometer was a valuable tool for navigation.
秒表是航海中的重要工具。