Studies show a link between time on a computer or in front of a TV and obesity.

VOA: standard.2010.07.02

He was motionless, all but for one finger that moved up and down in front of his face as if he were marking time with it.

他一动也不动，除了一根手指在他的面前上下摆动,好像在用它标记时间。

耶鲁公开课 - 1945年后的美国小说课程节选

Now, try putting that up in front of your desk: "You're a genius all the time."

你们可以试试把这句放在你们桌子前：,你一直是个天才“

耶鲁公开课 - 1945年后的美国小说课程节选

And testers threw large, inflatable dolls - representing children - in front of the cars at random mements to test the driver's reaction time.

VOA: standard.2010.06.24

So how many time do you think-- you all have a piece of paper in front you-- how many time do you think you need to roll over the piece of paper ? for the piece of paper to reach the moon?

你们认为需要折多少次-,你们面前都有一张纸-,你们认为需要将纸折叠多少次,才能碰到月亮？

哈佛公开课 - 幸福课课程节选