1N-COUNT 计时员;计时器 A timekeeper is a person or an instrument that records or checks the time. 计时员;计时器
2N-COUNT 守时的人;准时的人 If you say that someone is a good timekeeper, you mean that they usually arrive on time for things. If you say that they are a poor timekeeper, you mean that they are often late. 守时的人;准时的人 [British]