They say the human and wheeled traffic in a busy city center could provide enough energy to light the streets of an entire town or power the heating system for a hospital or school.

他们说，在繁华大城市的中心，人群和过往车辆可提供足够的能量为整个城镇的街道照明或者为一个医院或学校提供供暖系统的动力。

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There are three bedrooms and two full baths, beamed ceilings and large Windows which allow the property to bask in natural light, conserving heating costs.

有3个卧室，2个完整的卫生间，有梁的天花板和能让屋子采光的大窗户，节省了供热成本。

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Gore subsequently has installed solar panels, a geothermal heating and cooling system, compact fluorescent light bulbs and other energy-saving technologies in his home.

随后，戈尔在家中安上了太阳能电板、地热供热和制冷系统、节能荧光灯和其他节能技术。

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Major energy costs for hotels include heating, light and power (HLP).

FORBES: Solar Powered Energy Management for Hotels

Sky Greens venture is supported by the Singaporean government and has another advantage over other urban farms around the world: abundant natural heating and light.

CNN: Urban farming looking up in Singapore

And last spring, the company redesigned the oven, replacing the traditional light bulb used for baking with an electric heating element, then switching the oven's door from the side to the front.

NPR: Burns Prompt Another Toy-Oven Recall