Tornadoes usually travel in a northeasterly direction with a speed of thirty-two to sixty-four kilometers an hour.

VOA: special.2010.05.11

One is called the twenty-four hour recall and that's either done by a computer, or done by a trained interviewer who would sit down with you and say, 'Let's reconstruct everything you've eaten in the last twenty-four hours.' And so then you have to recollect everything you ate in the last twenty-four hours.

其中之一被称为24小时回顾法,可由计算机完成,也可以由专业测试人员,坐在你面前并对你说,"让我们记录所有,最近24小时你所吃的东西",然后你需要回忆,最近24小时内吃了什么

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But, it's about a four-hour film, and it's called The Sorrow and the Pity and it's about Clermont-Ferrand, which is in the Massif Central here.

那电影大概四个半小时,叫哀伤与怜悯,是关于克莱蒙费朗的,在中央高地这里

耶鲁公开课 - 1871年后的法国课程节选

They were designed to fly at speeds up to six thousand four hundred kilometers an hour.

VOA: special.2010.07.07

I remember walking around the square during mu lunch hour, walking faster and faster trying to get around, four or five different classes of kids, all of whom were verbally abusive to me, and feeling there was no place that I belong there was no place that I felt connected to other kids.

我记得我在广场周围走着,那会儿正是午餐时间，我越走越快,想翘过接下来的四五个不同的班级,班上的孩子都对我恶言相向过，我觉得自己无处可去,我找不到自己和其他孩子相联系的地方。

麻省理工公开课 - 媒体、教育、市场课程节选

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

VOA: special.2010.08.04

But Armstrong and Aldrin asked to cancel the four-hour sleep period.

VOA: special.2009.07.15

One hundred forty-eight tornadoes struck during a twenty-four-hour period.

VOA: special.2010.05.11

"We have about three or four of us that lace up our tennis shoes at our lunch hour, and we walk for 30 minutes every day."

VOA: standard.2010.07.16