名词
中文翻译：Unknown
同义词：
['navigator', 'timekeeper', 'timing device']
例句：
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1. The navigational chronograph on the wrist is a crucial tool for pilots.
手腕上的导航计时表对飞行员来说至关重要。
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2. The engineer used the navigational chronograph to calculate the time taken to complete the task.
工程师使用导航计时器来计算完成任务所需的时间。
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3. The navigational chronograph was used to track the progress of the construction project.
导航计时器被用来跟踪建设项目的进度。