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

Day and night were divided into the same number of parts, so that except at the equinoxes, days and night hours were unequal; and then of course the length of these hours varied with the seasons.

白天和黑夜被分为均等数量的部分，所以除去昼夜平分点，白天和黑夜时间是不等的；当然，这些时长也因季节变化而变化。

youdao

This can be split into a number of parts

这部分可划分为下面几个部分

youdao

"So when Medvedev committed himself to the idea of creating a Silicon Valley, and there were a number of parts, different cities in Russia that vied for its location, it was decided to put it in this park.

VOA: standard.2010.06.18

Now these parts of the world are shrinking in the number; but let's say you lived in Ethiopia or Somalia, or places where food really is scarce way too much of the time, then having this particular biological drive, having a brain that wants you to seek out these foods would be highly adaptive.

现在这些地区的数量正在减少,但如果你生活在埃塞俄比亚或是索马里,或是当前食品十分短缺的地区,那么拥有这种生物驱动力,拥有不断驱使你去寻找食物的大脑,会让你有极强的适应能力

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

For his mathematical project, he compared two ways to estimate the square root of an integer, a number with no fractional parts.

VOA: special.2011.03.24

Steve Wozniak had a genius for designing the most efficient computer from the least number of parts.

FORBES: Real-World Advice for the Young

Burns says a fuel-cell vehicle has one-tenth the number of parts of a traditional internal combustion engine.

FORBES: On The Cover/Top Stories

The design of the tools reduces the number of parts to be sterilized, reducing risk of cross-contamination and cost.

FORBES: Medical Innovation in the Corn Fields