The National Parks in England are called "England's Breathing Spaces" because they are places where people can go to be in the open air, away from the dirt and noise of cities.

英国的国家公园被称为“英国的呼吸空间”，因为在那里人们可以远离城市的尘土和噪音，享受户外的空气。

youdao

He likes to cook in the open air.

他喜欢在外面做饭。

《牛津词典》

You can also open the window, keep your head outside to get fresh air and shout for help.

你也可以打开窗户，把头伸出窗外呼吸新鲜空气并呼救。

youdao

Because of the open-air stage, actors had to shout very loudly and make big motions to be heard and seen by all.

VOA: special.2010.01.06

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

It's a textile center and home to the nation's biggest open-air tobacco market.

VOA: standard.2010.03.18

But we found asbestos lying on machinery open to the air.

BBC: News Online

Officials elected to hold the Mass in the open air to avoid the risk of injury from falling debris.

CNN: Thousands mourn Italian quake victims

If we were to move - the open air market they would have to buy lorries and vans to get the produce from wherever we finish up, up to their place.

BBC: Current Birmingham Wholesale Market site 'ideal'