Chemical sprays like air fresheners,hair spray, household cleaning products and even strong perfumes can also trigger an asthma attack.

VOA: special.2009.07.28

It's going to take place in there. It's going to be a constant pressure, it might be open to the air, or even if it isn't, there might be plenty of room, and it's a liquid anyway, so the pressure isn't going to change significantly.

也许它是液体，它在这个位置,这是恒压的，它也许是连通大气的，就算不是，它也有，足够的空间，而它是液体,压强不会显著地改变。

麻省理工公开课 - 热力学与动力学课程节选

As part of the supply effort, the British Royal Air Force even landed Sunderland Flying Boats on a Berlin lake.

VOA: special.2011.08.11

But Chesley Sullenberger is also an expert on air safety, including accident investigations, and even has his own consulting business.

VOA: special.2009.01.30

Chemical sprays like air fresheners, hair spray,cleaning products and even strong beauty aids can trigger an asthma attack.

VOA: special.2010.09.07

They point out that the finding was based on one air measurement taken in an industrial town that is not even in Pittsburgh.

VOA: special.2009.07.13

They spread through the air when the person coughs or sneezes or even sings and talks.

VOA: special.2009.03.25

You are up high, so even in the summer the air usually is cool.

VOA: special.2009.07.20

On May,22 they even launched a ground attack on Kandahar air field, NATO's sprawling military base outside the city.

VOA: standard.2010.05.26

The long term effects of breathing polluted air are even more alarming.

VOA: standard.2010.08.04

And that in turn leads to additional emissions of harmful pollutants and our area is very concerned about improving air quality as one of the key ways to make our communities even better places to live and work."

VOA: standard.2010.07.26