During this period, which can take two to four years, the would-be taxi driver has to learn the most direct route to every single road and to every important building in London.

想要成为出租车司机的人会花上两到四年的时间了解伦敦每条道路和每座重要建筑的最快的路线。

youdao

Inhaling steam two to four times a day may help, too.

呼吸水蒸气两到四次一天也能够有所帮助。

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A modern laptop has two to four cores, and a desktop may have 16.

一台现代笔记本电脑，有两到四个核心，而台式机则可能会有16个。

youdao

Anders Wilhelmson says the sanitation process can take as little as a couple of hours or as long as two to four weeks.

VOA: special.2010.03.15

So in addition to having these two carbon bonds, we actually also have four carbon hydrogen bonds in addition to our carbon-carbon bonds.

在这碳碳之间的键以外，我们还有四个碳氢键,除了我们的碳碳键外。

麻省理工公开课 - 化学原理课程节选

Here we go. One, two, three, four, one, two, three, four, nice and loud. Come on. I want to hear it.

来,一二三四,一二三四,大点声,让我能听见

耶鲁公开课 - 聆听音乐课程节选

That happened two to four times in the weeks before his death, he said.

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Expect to pay with warrants and interest rates two to four percentage points above prime.

FORBES: Going Into Hock

According to the DSB, each member owns an average of two to four guns.

BBC: Shootings shock German gun clubs