In zoos, animals are no longer kept in cages, but in great spaces, either in the open air or in enormous greenhouses.

在动物园里，动物不再被关在笼子里，而是生活在广阔的空间里：要么是露天的环境，要么是巨大的温室。

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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。

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Weeding,seeding and watering requires at least as much work as crops grown in the open air.

VOA: special.2009.12.22

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

She gave a free concert in the open air, near the Lincoln memorial.

VOA: special.2009.01.25

It will be shown in the open air at Spicherer Hoehen, near the border with Germany.

BBC: Lost Lloyd George film gets showing

It is hoped that work in the open air will provide an alternative to traditional treatments.

BBC: Farm work prescribed to Norfolk and Suffolk patients

Commonly overlooked items like barbecues and yes, even vehicles, need to be rescued from the open air.

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