「計時」

(pos:動詞)
<explanation>
yue:記錄一件事需要幾多時間去完成
eng:to record the time; to measure a certain period
<eg>
yue:我同你計時，睇吓你跑一百米要幾耐？ (ngo5 tung4 nei5 gai3 si4, tai2 haa5 nei5 paau2 jat1 baak3 mai5 jiu3 gei2 noi6?)
eng:I can record the time you need to run 100 meters.