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》

The group's recent "State of the Air" report said Pittsburgh has the worst short-term fine particle pollution in the country.

VOA: special.2009.07.13

And it's the windows in the firmament that are opened--those waters are allowed to rush in and dissolve that air bubble.

而在天空上有个口,水可以从中涌入，溶解这些气泡。

耶鲁公开课 - 旧约导论课程节选

But it can be acquired in the air, from patients that are from- from other individuals that are infected.

天花会通过空气传播,通过病人和其他感染者呼出的空气传播

耶鲁公开课 - 生物医学工程探索课程节选

Despite making her name for singing in the Gaelic language, Fowlis recorded two songs for the film - Touch of Sky and Into the Open Air - in English.

BBC: Brave singer Julie Fowlis: 'I was terrified of singing'

The Seawolf submarine, the C-17 transport aircraft, several different air-to-ground and air-to-air missiles are in the cross-hairs.

CENTERFORSECURITYPOLICY: Center for Security Policy | FOR A CREDIBLE DEFENSE POSTURE IN THE FUTURE, INVEST IN THE B-2 TODAY

The latest deaths came a day after the observatory said at least 18 people were killed in an air-strike in the town of Saraqeb in the north-western province of Idlib.

BBC: Syria conflict: Government air strikes 'kill 25'