We ventilate a room by opening Windows.

我们开窗以使室内空气流通。

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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。

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The AAIR charity recommends opening Windows while cooking, washing and bathing.

美国AAIR协会建议在做饭、洗衣和洗漱时打开窗户。

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In recent months, Microsoft also said it was opening Windows Phone app sales in more than a dozen countries including China.

WSJ: Microsoft Woos App Developers in Windows Phone Push

Instead of opening windows, the new Royal London Hospital has 200 units that bring clean filtered air into the hospital's 3, 500 rooms.

BBC: Closing hospital windows 'increases infection risk'

While the research could help inform practices in older NHS buildings, many newer UK hospital buildings feature no opening windows and complex computer-controlled ventilation systems.

BBC: Closing hospital windows 'increases infection risk'