Schools keep closed for about two months in summer.

暑期学校停课近两个月。

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"Johnsy,dear," said Sue, "will you promise me to keep your eyes closed, and not look out the window until I am done working?

VOA: special.2009.08.01

The process uses a closed system to keep hair and dirt out of the milk.

VOA: special.2010.07.20

Keep it closed and the environmentalists will lock up everything.

NPR: ANWR Community Split on Oil Exploration

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

BBC: The Gal��pagos Islands, a land untouched

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

FORBES: Six Brands to Consider and Six Suggestions of What to Do When February Flowers Bring March Allergies