timekeeper
🇺🇸
/ˈtaɪmkiːpər/
🇬🇧
/ˈtaɪmkiːpə(r)/
A person who keeps track of time, especially in a workplace or sports setting.
The timekeeper at the basketball game made sure the players didn't go over the time limit.
篮球比赛中的计时员确保球员们没有超过时间限制。