All this wet air is pulled in by a high pressure area over the Indian Ocean and a low pressure area to the south.

VOA: special.2010.05.25

For those of you don't know what that is it's simply an instrument that counts radioactive particles in the air, and MIT now that you're at MIT, you'll all have a chance to see one first hand if you're ever in any of the labs, especially in the chemistry or bio labs.

不知道它是什么,它就是一个简单的,计算在空气中放射粒子数目的仪器,你们现在来了，如果你们在实验室里工作的话,尤其是化学和生物实验室，你们有很多机会亲手用到它。

麻省理工公开课 - 化学原理课程节选

I mean, if the energy is lower to occupy a smaller volume, then if I have this room and a bunch of molecules of oxygen, and nitrogen and what have you in the air, and there are weak attractions between them, why don't they all just sort of glum together and find whatever volume they like.

我的意思是，如果占据小的体积会使能量降低，如果我有这样一个空间,和一些氧气，氮气和其他空气中有的气体，并且分子之间还有微弱的相互作用，为什么他们不黏在一起,然后占据他们所想要占据的体积。

麻省理工公开课 - 热力学与动力学课程节选

And the next minute you would see that frog dancing in the air and then come down all on his feet and all right, like a cat.

VOA: special.2009.08.29

Everybody wants to go for a wonderful hike and start off with fresh air and all the things we're going to have in our lives the whole next year.

VOA: special.2009.12.28

at General Eisenhower's headquarters,General Jodl, the representative of the German High Command and of Grand Admiral Doenitz, the designated head of the German state, signed the act of unconditional surrender of all German land,sea and air forces in Europe to the Allied Expeditionary Forces, and simultaneously to the Soviet High Command."

VOA: special.2011.06.16

All air travelers arriving asked in the United States now face some measure of increased scrutiny.

VOA: standard.2010.01.05

Rodney Barker says it is all up in the air.

VOA: standard.2010.05.05