种植和吃掉一磅土豆，向空气中排放的二氧化碳不超过四分之一磅。

To grow and eat a pound of potatoes sends less than one-quarter pound of carbon dioxide into the air.

youdao

它没有那么吵，也不污染空气。

It is less noisy and does not pollute the air.

youdao

爬过几次后，只要爬到半球形蓄水池顶，我的恐惧似乎就在午夜温暖的空气中蒸发了——原来，只是我久不练习而已。

After a few more climbs, once to the top of the domed reservoir, my fear seemed to evaporate in the warm midnight air—I had simply been out of practice.

youdao

dT/dp is mu JT. So for a real gas like air, this is a positive number. It's not zero.

所以对于像空气这样的真实气体，这是一个正数，不等于零。

麻省理工公开课 - 热力学与动力学课程节选

The air is crisp and clean, unlike this room.

不像这屋子里，外面的空气新鲜又清静。

I want to 实战 - SpeakingMax英语口语达人

We're still close enough to the summer that the air is not just filling us up with extra static electricity, so it's a little more challenging here.

我们现在离夏天更近了,这样空气中不总是,充满额外的静电，所以这时做实验,会有一些挑战性。

麻省理工公开课 - 化学原理课程节选