timekeeper
🇬🇧/ˈtaɪmkiːpə(r)/ 🇺🇸/ˈtaɪmkiːpər/ 31A timekeeper is a person or an instrument that records or checks the time. 计时者; 计时器
noun [专属名词]计时员；钟表；工作时间记录员
Once known, it spread rapidly, driving out water clocks but not solar dials, which were needed to check the new machines against the timekeeper of last resort.
单词造句: