Fires heat the air, pushing it high into the atmosphere where it can cool into clouds.

火焰加热了空气，使之冲向高空的大气并形成云团。

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In a hot air stove, coal generates hot flue gas to heat the air, then the hot air is used to dry the powder ammonium phosphate.

利用热空气炉燃煤产生热烟气加热空气作为热源干燥粉状磷铵。

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The warmer ocean would heat the air above it, which would slow the refreezing of ice in winter, which would in turn become even more susceptible to melting in summer.

温暖的海洋将加热海洋上空的空气，这将减缓冬季冰重新冻结，这反过来使海冰更加容易在夏天融化。

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I knew the sky was black because all the heat, which meant light to me, had died out of the air.

VOA: special.2009.11.15

The extra heat is enough to cause ocean waters to evaporate into the air.

VOA: special.2009.09.29

People bring heat with them. They also add wetness to the dry air.

VOA: special.2009.12.15

Once established, the heat content of the air at ground level is enough to keep the vortex going.

ECONOMIST: Harnessing artificial tornadoes as an energy source

Carrier's gadget instead uses the heat in outdoor air as the energy source.

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By sucking 55-degree heat out of the ground and concentrating it, the heat pump is able to deliver 110-degree heat into the warm air ducts of a central heating system.

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