One study involved sixty-eight healthy young women and men who ran at least twenty-four kilometers a week.

VOA: special.2010.02.03

So this is a thing, Week Number Four, saw very commonly, which was -- this is something we saw commonly and there's a couple of issues here.

所以这是一件事，第四个，一般的分解，那是我们讲解的东西,这里有好几个问题。

哈佛公开课 - 计算机科学课程节选

But it's difficult, because you have to go there like four or five times a week.

但是要坚持学习真实太难了，你一周得去四、五次。

I used to实战 - SpeakingMax英语口语达人

Six-week-old babies generally breastfeed seven to nine times in a twenty-four-hour period.

VOA: special.2010.08.04

At some point, maybe a week later, four to eight days later, you would start to see antibody levels rise.

之后,或许一周之后,四天到八天之间,就可以看到抗体的浓度开始上升

耶鲁公开课 - 生物医学工程探索课程节选

"Last week European markets fell sharply by three to four percent and that created a domino effect in global equity markets.

VOA: standard.2010.05.17

Americans spend the most time out of any other people in the world volunteering in average four hours a week, volunteering outside their job which may also have a social objective more than any other people in the world.

比其他任何人所花的时间都多,平均每周有四个小时做志愿者的工作，做与自身工作无关的善事,他们比世界上其他人更具社会目标。

哈佛公开课 - 幸福课课程节选

And the Treasury Department reached a $2 billion deal earlier in the week with four banks that hold most of Chrysler's debt.

VOA: standard.2009.04.30

If I want a copy of the string, I've got to whip out my week 1 skills of just iterating with a four loop from left to right and make copies of those characters.

我需要那个字符串的一个拷贝，我使用,第一周的技巧，从左到右做四次迭代,然后复制这4个字符。

哈佛公开课 - 计算机科学课程节选

The company's shares recently dropped to a four-week low.

VOA: standard.2009.10.15

We practice six days a week, usually, you know, three to four hours a day,

通常我们每周练习六天，你知道，每天三到四个小时，

赛艇项目很流行 - SpeakingMax英语口语达人

Major Nidal Malik Hasan is conscious and able to talk, according to Army officials overseeing his care following last week's incident in which the suspect was shot four times by a civilian police officer.

VOA: standard.2009.11.10

You got four full weeks of vacation - twice the usual paid time away - and editors got a week of company-paid educational travel to anyplace they wanted to go in the country.

VOA: standard.2010.03.08