The researchers asked them if they napped and for how long.

研究人员询问他们是否午睡以及午睡多长时间。

youdao

The issue is by how much and for how long.

问题是，届时谷歌收入会实现怎样的增长以及能够持续多久。

youdao

How often does a coworker interrupt your work and for how long?

你的同事打断你几次以及有多少时间？

youdao

And mixed economic signals continue to call into question how long it will take for the country to emerge from recession.

VOA: standard.2010.01.06

As time increases, the angle increases and we can ask, "How long does it take for the particle to come back to the starting point?"

这个角度随着时间在增加,我们会问,"质点需要多长时间,才能转到起点"

耶鲁公开课 - 基础物理课程节选

" And-- "How long are you going to stay happy for?"

你们的快乐会持续多久“

哈佛公开课 - 幸福课课程节选

We wanted to investigate to find out who knew what, when, and for how long.

CNN: IRS scandal needs more than a scapegoat

How many more, and for how long, must be for the generals to decide.

ECONOMIST: The war on terror

What cannot easily be known is what it was beforehand, and for how long.

ECONOMIST: The arrow of time