As this air is warmed and picks up moisture, it becomes lighter than the air above it.

当这些空气被加热并吸收了水分，它会变得比上面的空气轻。

youdao

And I want to do that here with this air track.

我想用这个空气轨，来做实验。

youdao

My tongue, every atom of my blood, form'd from this soil, this air.

我的舌，我的血液中的每个原子，都是由这泥土这空气构成。

youdao

This wet air is then carried by trade winds to the normally rainy areas of the western Pacific, near the Equator.

VOA: special.2009.09.29

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

So, if you want to attack urban air quality, this is probably moving in the wrong direction, OK?

所以如果你想攻击都市的空气质量，这可能是一个错误的方向，对吗？

麻省理工公开课 - 固态化学导论课程节选

This air has its temperature and pressure corrected before being fed into the cabin.

BBC: NEWS | Europe | Dangers of aircraft decompression

You go up this air tower, which is 95 feet above the ground.

BBC: Imperial War Museum North

This air circulation pattern "compartmentalizes" the air flow into sections, thereby limiting the spread of airborne particles throughout the passenger cabin.

CNN: Commentary: Flu and your health on a plane