United States Agriculture Secretary Tom Vilsack said no one single nation can fight agricultural greenhouse gas emissions and increase food production at the same time.

VOA: special.2010.01.05

That for an ideal gas it has to be the case that there's no volume dependence of the energy.

我们可以直接推导这个结果,即证明对理想气体，内能和气体体积无关。

麻省理工公开课 - 热力学与动力学课程节选

No one was injured in a blast which was attributed to the buildup of gas by one town official."

镇政府天然气泄漏导致爆炸,所幸并无一人受伤",因而并无人员在爆炸中受伤]

耶鲁公开课 - 心理学导论课程节选

The gas has no color. It has no taste.

VOA: special.2010.02.02

well since the gas is expanding into vacuum no work is done.

因为气体是向真空膨胀,因此这个过程不做功。

麻省理工公开课 - 热力学与动力学课程节选

So, no matter whether or not you write out the full form here, or the noble gas configuration where you write ne first or whatever the 3s1 corresponding noble gas is to the core electrons, we always write out the valence electrons here.

所以无论你是否,写出了完整形式，或者对应于价电子的惰性气体,再一次,我们可以写Ne然后，我们总是可以在这里写出价电子。

麻省理工公开课 - 化学原理课程节选

Our piston on the right side here fully out, and the piston on my right side, your left side, fully inside. There's no gas p1 on that side here. So there's p2 sitting here.

左边的这个活塞完全在外面，而右边的左边的这个活塞完全在里面，这边没有一点空气,这边是P2，这边是。

麻省理工公开课 - 热力学与动力学课程节选