Keep the warm air inside your home by placing a piece of approximately 2 foot-by-3 foot plywood over the mouth of your fireplace to prevent drafts going up the chimney when you're not having a fire.

保持室内的暖空气，可以通过在你家壁炉入口处放一块大概2到三英寸的夹板来防止你不用火时风进入烟囱。

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During the Second World War, when a young group of pilots in the RAF were fighting for their lives in the air over England, they would often be hit by enemy fire.

在第二次世界大战中，当英国皇家空军在英格兰上空为自己的生命二战的时候，他们经常会被敌军的火力攻击到。

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But on the other hand, the use of over-fire air reduces the combustion efficiency of pulverized coal.

但另一方面，燃尽风的应用将导致煤粉燃烧效率下降。

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Planes are flying over the scene, dropping water over the fire and still big plumes of smoke are hundreds of meters in the air ... tons of ambulances, firefighters.

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Monday's announcement by the board of Alitalia that it was accepting a bid by Air France-KLM provoked howls of outrage from politicians and union leaders over the fire sale price being offered, as well as the impact the sale would have on the economy of Milan, the Italian capital of business.

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That ideas should freely spread from one to another over the globe, for the moral and mutual instruction of man, and improvement of his condition, seems to have been peculiarly and benevolently designed by nature, when she made them, like fire, expansible over all space, without lessening their density in any point, and like the air in which we breathe, move, and have our physical being, incapable of confinement or exclusive appropriation.

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