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Keep Windows closed to prevent pollen from coming in the house.

保持窗户关闭以防止花粉进入房间。

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It said people should cover their mouths when outside and keep doors and Windows closed.

还说人们外出时应该遮好嘴巴并且关好门窗。

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But the shutters stayed closed until after astronauts removed the windows' protective covers during a nearly six-hour spacewalk Wednesday.

VOA: standard.2010.02.18

Guests are even asked to keep their windows closed at night to help the same cause.

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Keep the windows closed and the air-conditioning on, giving you an allergen free bubble.

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Emergency officials in southern Kent advised residents "to keep doors and windows closed due to a gas cloud".

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