The angular momentum change must be torque t times delta t.

角动量的改变就是,力乘以δ

youdao

Specifically, AT&T will add 2,000 new cell sites and upgrade existing cell sites with three times more fiber links than it had in 2009.

具体来说，AT&T 将增加2000个新基站，升级现有基站的光纤连接数量是2009年的三倍。

youdao

I've worn (and washed) this T-shirt hundreds of times.

这件 T 恤我已经穿过（同时洗过）几百次了。

youdao

"My father left my family when I was two years old, and I was raised by a single mother who struggled at times to pay the bills and wasn't always able to give us things the other kids had.

VOA: special.2009.09.10

Of course, we will also be talking about behavioral finance in this course and we'll, at times, be saying that the utility function concept isn't always right-- the idea that people are actually maximizing expected utility might not be entirely accurate.

当然 我们还会,在这门课上讨论行为金融学,并且,我们会间或,讨论到效用函数不总是正确的,人们希望最大化期望效用的观点,也许并不是完全准确的

耶鲁公开课 - 金融市场课程节选

Now, I don't know how far back it goes but it must be that in ancient times some people would say, all right you're going to be doing more work or you're contributing more to this enterprise, we'll give you a bigger share of the profits.

我不知道这能追溯到什么时候,但在古时候肯定有人说,好吧,你比别人干得多,你对公司的贡献更大,我们会把收入的大头给你

耶鲁公开课 - 金融市场课程节选

There aren't many times when the airline industry deserves public sympathy, but the current flap over whether and how to deal with overweight passengers is a no-win situation.

FORBES: Magazine Article

In a country that is predominantly black, people don't have identity issues and people don't have times where they are being told they cannot reach for the sky.

NPR: Obama Win Changes Perceptions Abroad

We didn't take care of the ball a couple times and we didn't rebound defensively a couple times when we really needed to.

WSJ: St. John's beats DePaul 79-74 in OT