The air in the factory is filtered to remove impurities.

工厂里的空气经过过滤去除杂质。

《柯林斯英汉双解大词典》

I should not mind fresh air in a secret garden.

我不介意在一座秘密花园里呼吸新鲜空气。

youdao

I need to put some air in my tyres.

我需要给我的轮胎打些气。

《牛津词典》

During one week in nineteen forty-eight, poisonous air in a nearby town killed twenty people and sickened six thousand others.

VOA: special.2009.07.13

Southerners shared with Northerners a faith in progress, if you breathed the air in American in the 1840s and '50s.

南方人和北方人对发展有共同的信念,十九世纪四五十年代的美国就是例子

耶鲁公开课 - 美国内战与重建课程节选

But you don't compress it so quickly that you're not in there reversible process so you compress that if you were to feel the temperature of the air and you can feel it through the nozzle gives you an idea of the temperature of the air inside your bicycle pump.

但是压缩速度,也不能太快,否则就不是,可逆过程了,这样当压缩气体时,从喷嘴可以感受到,内部气体的温度。

麻省理工公开课 - 热力学与动力学课程节选

Residents claim they often choke on the dust in the air in the evenings.

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There are often multiple 30-minute rounds, with breaks in-between to let the outside air in and drink water.

BBC: The origins of bathhouse culture around the world

And something in the air in America is starting to feel a lot like that.

FORBES: Can America Meet the Challenge of Muslim integration?