In addition,news agencies provide updates and companies share product information through Twitter Some critics say Twitter is a waste of time that takes people's attention away from their work.

VOA: special.2009.02.06

So first I'm gonna say something about identity across time or indeed initially identity across space with some familiar humdrum material objects.

所以我首先要,用一些大家熟悉的一般实物,谈谈贯穿时间,和贯穿空间中的人格。

耶鲁公开课 - 死亡课程节选

Let's say you have been a runner for some time and you have been running daily

假设你是个赛跑手，你每天都会跑步。

That's why 课堂 - SpeakingMax英语口语达人

Some human rights groups and Roma leaders say the attacks come at a time when right-wing extremists are searching for scapegoats for Hungary's current economic crisis.

VOA: standard.2009.08.22

A clock tells you what time it is, but you can also say what time it is by seeing how fast the particle is moving because you know it started with some speed.

时钟能告诉你现在的时间,但你也可以通过测量质点速度,来判断当前的时间,因为你知道它的初速度

耶鲁公开课 - 基础物理课程节选

It's a really good time." Although manufacturing numbers, which reflect demand, expanded again in February, some economists say recovery will not be as rapid as in previous downturns.

VOA: standard.2010.03.02

now we're not just talking about 1 photon, 1/2 let's say we shoot them all at the same time at our metal, each of them having some energy that's let's say 1/2 the work function. So, just to take a little bit of an informal survey, who thinks here that we will have an electron that is ejected in this case?

我们现在不仅仅讨论一个光子，它们所具有的能量是功函数的，我们在同一时刻把它们打到金属上,我们做一个不太正式的调查,谁认为这种情况下,一个电子会被打出？

麻省理工公开课 - 化学原理课程节选