These absorb heat, via a link to specially built Windows, and spontaneously emit it to the house when the temperature drops in the evening.

通过与特别建造的窗户相连接，它们可以吸热，并在夜晚温度下降的时候自动把热量释放到房屋里。

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If pure hydrogen is used as a fuel, fuel cells emit only heat and water as a byproduct.

如果用纯氢作燃料，副产品只有热和纯水。

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In addition to consuming CO2, phytoplankton can influence how much heat is absorbed by the world's oceans, and some species emit sulfate molecules that promote cloud formation.

除了消耗二氧化碳外，浮游植物可以影响海洋吸收热量多少，有些种类浮游植物还可以释放能够促进云形成的硫酸盐分子。

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The instruments aboard the satellite allowed scientists to spot close-in asteroids by picking up the heat they emit, Mainzer said.

CNN: NASA estimates 4,700 'potentially hazardous' asteroids

As they do so, they emit heat and light.

ECONOMIST: Ball lightning