We are cruising along at 30 mph when, suddenly, the car flies up in the air and lands with a dull thump.

我们正以每小时30英里的速度行驶，突然，汽车腾空而起，砰的一声重重地落在地上。

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In a multi-stage life, you could be an undergraduate at 20, 40, or 60; a manager at 30, 50, or 70; and become an independent producer at any age.

在一个多阶段的生活中，你可以在20岁、40岁或60岁成为一名本科生；在30岁、50岁或70岁成为一名经理；还可以在任何年龄成为一位独立制片人。

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Police estimate the crowd at 30 000.

警方估计聚集的人有3万。

《牛津词典》

Live video will begin at 16:30 Universal Time Tuesday at usavotes2008.com.

VOA: special.2009.01.19

And, I will have office hours today 30 starting at about 3:30 to 4:30 if you want to see me.

另外你今天如果想来见过的的话,我的办公时间是从3：30到4：

麻省理工公开课 - 固态化学导论课程节选

But one of them was on a Nashville, Tennessee radio station, on a program at 5:30 p.M. Called "Drive Time."

但在田纳西州那什维尔电台下午五点半的,"驾车时刻"节目中,主持人这么问我

耶鲁公开课 - 美国内战与重建课程节选

Facing a break point at 30-40, she hit a second serve that was ruled out.

NPR: Sharapova Reaches 4th Round At French Open

How dare I say such a thing about an industry growing at 30% a year?

FORBES: Another Bite Of The Apple

Some 110 UK universities appear in these subject rankings, which look at 30 disciplines.

BBC: Oxbridge rated best in world for seven key subjects