Aesthetics are nice, but they can't pay the electricity bill when a skylight lets in too much light and heat, causing the air conditioner to work overtime. Or can they?

美观固然是好，但是它不会为你支付因为太阳光的引入太多光和热，而造成的空调超时工作的电费。

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And so maybe the work generated the heat.

因此或许功产生了热。

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And the idea was that gravity did work on the water and falling, and that work led to the generation of heat.

焦耳的想法是，重力对水，做了功。

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The causes of heat stress include wearing heavy clothing, physical work or exercise, hot weather and high humidity.

VOA: special.2011.08.09

And the idea was that gravity did work on the water and falling, and that work led to the generation of heat.

焦耳的想法是,重力对水，做了功。

麻省理工公开课 - 热力学与动力学课程节选

And in practical terms, we can define the efficiency as the ratio of the heat in to the work out.

在实际中，我们定义,效率为热与功的比值。

麻省理工公开课 - 热力学与动力学课程节选

The discovery surveys done under the RCAHMW flying programme in extreme weather conditions - they carry out the work in the heat of summer too - mean "sometimes the story of Wales gets flipped on its head, " said Dr Driver.

BBC: Snow survey uncovers prehistoric sites in Wales

The thermoacoustic Stirling heat engines developed by the LANL scientists work by creating intense acoustic energy that can be used directly in acoustically powered refrigerators or to generate electricity.

CNN: Lab develops engine for the future

In the deeper mines the heat can reach 400 Celsius, and men work by the light of a single flame.

ECONOMIST: Under the ocean, up in the clouds