timekeeper
US /ˈtaɪmˌkiː.pɚ/
UK /ˈtaɪmˌkiː.pər/
名词
计时员
an object or person that records (an amount of) time:
示例:
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There's no point in having a clock which looks attractive if it isn't a good timekeeper (= if it doesn't show the correct time).