It has 1,600 full-time residents, but in the summer months the population swells to about 20,000.

VOA: standard.2010.02.23

And for those of you at the very end of the alphabet, 1-190 we have a special room for you, 1-190, so everybody has some elbow room.

而你在字母表的末尾，我们给准备了一个特别的房间，因此，每个人都有些活动空间。

麻省理工公开课 - 固态化学导论课程节选

s -- we don't have to hybridize it, it already has only one unpaired electron in a 1 s orbital.

s-我们不用杂化它，它已经有而且仅有一个未配对电子在s轨道里。

麻省理工公开课 - 化学原理课程节选

BP has already spent over $1 billion on the clean-up operation .

VOA: standard.2010.06.18

Because it has MHC-1, your MHC-1 on it, this T-cell recognizes that it's one of your cells but it has a foreign antigen associated with it.

因为该细胞上有MHC-1,T细胞将这些细胞识别为自身细胞,但这些细胞带有异己抗原

耶鲁公开课 - 生物医学工程探索课程节选

Army officials say that the anti-Taliban campaign has killed more than 1,800 militants and the United Nations says the offensive has dislocated nearly two million people from the insurgency hit areas.

VOA: standard.2009.07.26

So if she consumes from Firm 2 she has to walk 1 -Y.

如果她想去公司2消费则她要走1-Y

耶鲁公开课 - 博弈论课程节选

The new policy announcement comes a day before Secretary of State Hillary Clinton travels to Mexico to discuss efforts to confront drug-related violence, which has killed more than 1,000 people in Mexico this year.

VOA: standard.2009.03.24

This should make a lot of sense, because we know that a hydrogen has 1 s as it's outer-most or valence orbital, so it can be filled up just with two 1 s electrons.

这也是很合理的，因为我们,知道氢只有，1，s，轨道,这就是它最外层的轨道或者说价轨道，因此只要两个，1，s，电子就可以将它填满。

麻省理工公开课 - 化学原理课程节选