我决定在解谜时给自己计时。

I decided to ___time myself while completing the puzzle.

教练将为每位百米赛跑运动员计时。

The coach will ___time each runner during the 100-metre sprint.

你能测一下水烧开需要多长时间吗？

Can you ___time how long it takes for the water to boil?