Incandescent light is the least energy efficient lighting.

白炽灯是效能最不好的。

youdao

The other option is fluorescent light which is one of the most efficient lighting sources.

另外一个选择是荧光灯，是高效节能灯的一种。

youdao

Like other green buildings, it will rely on natural light and ventilation, and energy-efficient lighting.

和其他绿色建筑一样，它将依靠自然光和通风以及高效节能的照明系统。

youdao

In contrast,a light bulb has much more impact in the use phase, where it's using the energy, and where you can reduce that with more efficient lighting technologies,"

VOA: standard.2009.03.30

He's also decided to give up leadership in Light up the World Foundation to start a company in India that will develop a more energy-efficient and cheaper lighting system that he hopes will bring even more light to the world's poor.

VOA: standard.2009.12.13

Cree makes energy-efficient lighting that can save businesses and consumers a lot of money.

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In North Carolina, there's a company that makes energy-efficient lighting -- hired hundreds of new workers.

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As efficient lighting technologies, like LEDs, go mainstream they become almost like a new source of green energy.

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