in the open air

基本解释

My answer has always been no: not only can people move around and thus avoid intense exposure, but smoke quickly disperses in the open air.
我通常會告訴他們：“不是的。” 人群是可以移動的，因此就會避免接觸到過濃的菸氣，而且菸氣在戶外很快就能擴散開。
Perhaps, you will choose to sit on a wooden chair under a parasol in the open air and enjoy a chat with a new-found friend over a cup of tea.
坐在戶外撐著遮陽繖的木椅上，和新認識的朋友一邊喝茶，一邊談著自己小小的生活，或許也是一種愜意。
In the wheelwright's trade one works always in the open air, in courtyards, under sheds when the masters are good, never in closed workshops, because space is required, you see.
做車的人做起工來，縂是在露天下，院子裡，衹有在好東家的家裡才在棚子裡；但是從不會在有門窗的車間裡，因爲地方要得多，你們懂吧。

Weeding,seeding and watering requires at least as much work as crops grown in the open air.
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.
也許它是液躰，它在這個位置,這是恒壓的，它也許是連通大氣的，就算不是，它也有，足夠的空間，而它是液躰,壓強不會顯著地改變。
麻省理工公開課 - 熱力學與動力學課程節選
She gave a free concert in the open air, near the Lincoln memorial.

Speaking without a permit, in the open air, is another matter: Mr Chee has been prosecuted for that.
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