stopwatch

• 一种用于精确测量时间间隔的计时器，可以启动和停止，常用于体育比赛等需要计时的场合。

A timepiece that can be started or stopped for exact timing, such as of a race or other timed event.

1. Precision timepieceB1formal

   A portable timepiece designed to measure the exact duration of an event, which can be started and stopped manually.

   秒表

   • The coach used a stopwatch to time the runner's lap.
   • She pressed the stopwatch as soon as the race began.
   • A stopwatch is essential for timing experiments in the lab.

   同义词timer