time·keep·er /ˈtaɪmˌkipɚ/
 工作時間記錄員,計時員,鐘錶


 Time·keep·er n.
 1. A clock, watch, or other chronometer; a timepiece.
 2. A person who keeps, marks, regulates, or determines the time. Specifically: --
 (a) A person who keeps a record of the time spent by workmen at their work.
 (b) One who gives the time for the departure of conveyances.
 (c) One who marks the time in musical performances.
 (d) One appointed to mark and declare the time of participants in races or other contests.

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 timekeeper
      n 1: (sports) an official who keeps track of the time elapsed
           [syn: timer]
      2: a clerk who keeps track of the hours worked by employees
      3: a measuring instrument or device for keeping time [syn: timepiece]