In practice, the wasted heat energy may be recovered and utilized by certain equipment so that energy will be saved and environment be improved.

实践中，可以通过某种设备系统将其回收利用，既节约了宝贵的一次能源，又改善了环境质量。

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It happens so quickly that, unlike other de-icing methods, heat is not wasted warming up the [object's] surface or the ice.

这种加热发生非常之快，而不像其他的除冰方式把热量浪费在了物体表面或者冰上。

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Modern bulbs, the descendants of that demonstration, are cheap (around 50 cents) but inefficient, because only about 5% of the energy they use is turned into light and the rest is wasted as heat.

现代灯泡-那个实例的后代-很便宜（约50美分）但却效率极低，这是因为只有5%的能量转换成了光，其他都被变成热量浪费了。

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In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.

这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖

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The second part of the system captures heat wasted during the first part, which usually sneaks up the chimney or otherwise vanishes unnoticed, and uses it to provide space heating or hot water.

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With players from both teams standing on the court as the final seconds ticked off and Pacers fans roaring in appreciation, the sellout crowd wasted little time breaking into chants of "Beat The Heat!"

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Legge notes that newer fossil fuel plants use the heat that was once wasted to turn an extra steam turbine, a process known as combined cycle.

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