For the same reason, tornado cellars must have an air opening.
出于同样的原因，防风窖必须有一个通风口。
We air the room by opening the window.
我们打开窗子让屋子通风。
If you have the option of opening Windows, let the fresh air in!
如果你可以打开窗户的话，那就让新鲜空气进来。
Would you mind opening the window? The air is so bad in the classroom.
打开窗户你不介意吧？教室里的空气太不新鲜了。
If you have the option of opening windows, let the fresh air in!
如果能开窗户，那么让新鲜的空气进入吧！
The cold air came in when opening the window.
把窗关上，别让冷空气进来。
We air the room by opening the Windows.
我们打开窗子让屋子通风。
Minimize the use of air-conditioner, and get fresh air by opening the window.
尽量少用空调，经常开窗获取新鲜空气。
Minimize the use of air-conditioner, and get fresh air by opening the window.
尽量少用空调，经常开窗获取新鲜空气。
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