He began counting them and then, with growing perplexity, counted them a second time.

他开始数，然后更加困惑地数第二遍。

《柯林斯英汉双解大词典》

He lit the candle and could tell the time by counting the number of parts left of the burning candle.

他点燃了蜡烛，因为通过计算着燃烧着的蜡烛剩下的部分就能推测时间。

youdao

Time already starts counting down.

时间已经开始倒数了。

youdao

Because I keep counting down each time around-- mostly I've got to unload this candy which is driving me nuts, so-- thank you.

因为我每次循环b减了,我一共要执行这个循环b次,所以这里我们一共执行了3b次基本操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

That got me to thinking: We still have a 9% unemployment rate, which is much, much higher when counting those persons who are involuntarily employed only part-time or who have entirely dropped out of the labor force.

FORBES: The Wealth Effect And Unintended Consequences

The extreme microscope will enable a number of subjective and time-consuming tasks such as counting the number of cells staining positive for a biomarker or locating cells infected with a parasite like malaria, to be replaced by highly repeatable and robust computer vision applications.

FORBES: The Socialization of Microscopes

You learn to write by writing, and writing a novel (counting the time for research and working out the back-story on all the main characters) usually takes about two years.

FORBES: A New Father's Struggle With Unemployment: 'How Will I Provide For My Family?'