Definition
计时 is a separable verb (离合词) meaning 'to time' or 'to measure time' — like a stopwatch. You can split it: 记 + (measure word/duration) + 时, e.g. 记了一次时 ('timed once'). It's used for contests, hourly billing, or any situation where elapsed time matters.
v.o.
to timeto measure elapsed time
Examples
- ，计时。Bǐsài kāishǐ, jì shí.The competition begins — start timing.
- ，。Tā jì le yí cì shí, fāxiàn yòng le sān miǎo.He timed once and found it took three seconds.
- 计时。Zhège tíngchēchǎng àn jì shí shōufèi.This parking lot charges by the hour.
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