名词
中文翻译：日心计时器
同义词：
['sidereal clock', 'sidereal timekeeper']
例句：
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1.The sidereal chronometer was used to measure the length of a day.
日心计时器被用来测量一天的长度。
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2.The sidereal chronometer is crucial for accurate timing of events.
日心计时器对于精确计时事件至关重要。
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3. The sidereal chronometer has been used for centuries to determine the true date of the solar system.
日心计时器被使用了几个世纪来确定太阳系的确切日期。