Jet lag is caused because the body clock does not readjust immediately to the time change.

时差是因为生物钟没有立即适应时间的改变而引起的。

《柯林斯英汉双解大词典》

Indeed, the very notion of productivity is a by-product of the clock: once one can relate performance to uniform time units, work is never the same.

事实上，生产力的概念本身就是时钟的副产品：一旦工作表现与统一的时间单位可以联系起来，工作就永远都不一样了。

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We have John standing by the time clock, and he swears he saw nothing irregular.

我们让约翰负责看着打卡机，他发誓没有看到任何异常。

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The clock could tell the correct time in two places, meeting the requirements for learning longitude on the sea.

VOA: special.2010.07.14

Now, the clock says I've run out of time.

哦,我们的时间不多了

耶鲁公开课 - 美国内战与重建课程节选

It's usually shown like a clock is shown here, where time 0, which is at the top here is right at the end of mitosis where you have two new cells that are formed.

通常会用一个类似时钟的图来图示,0时刻,在最上端 为上次有丝分裂终点,代表两个新细胞刚刚形成

耶鲁公开课 - 生物医学工程探索课程节选

The rule was, the more you looked at the clock the slower the time went.

NEWYORKER: Wiggle Room

Then she looks at the clock to time the seizure and tries to turn her husband on his side to help him breathe.

CNN: Seizures: When 'electrical brainstorm' hits

Over a few decades this would amount to a minute's difference, but over several hundred years this would mean the atomic clock time-scale and the time-scale based on the Earth's rotation would be out by an hour.

BBC: Changes to the world's time scale debated