When driving in a car on a hot summer day, you may see what looks like shimmering water on the road, which, as science tells us, is really just a mirage, an illusion caused by the heating of the air.

在炎热的夏天开车时，你可能会在路上看到闪闪发光的水，但科学告诉我们，这其实只是海市蜃楼，是空气加热造成的幻觉。

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Use a hot-water bottle or a heating pad set on low.

用一个热水瓶或一个设定为低温的加热垫。

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It is typically caused by prolonged exposure to heat or an infrared source such as a heating pad or hot water bottle.

通常是由于长时间暴露于高温或者红外线辐射源，例如加热垫或者热水瓶。

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"When solar panels supply both hot water and space heating, the goal of zero emissions begins to look achievable."

VOA: special.2009.03.25

It is the only place we saw that uses geothermal energy for heating and hot water.

BBC: Adventure in Russia's wilderness

Put the natural gas that you used to use heating your hot water into your vehicle.

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Micro-CHP encompasses a spectrum of energy technologies that produce heat (which can be used for space heating and hot water) and electric power simultaneously.

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