Sergio: Also to do with energy efficient power plants?

塞吉奥：还是跟那个高能效的发电厂有关吗？

youdao

With some exceptions, the oldest homes tend to be the least energy-efficient.

除了一些例外，最老旧的房屋往往是最不节能的。

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Some say that once the costs of power generation are factored into the equations, electric cars are only half as efficient with regard to energy use as modern diesel vehicles.

有人认为，一旦将发电成本综合考虑在内，在能源使用方面，电动汽车的效率只能达到目前现代柴油车的一半。

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

The ones who would seek out calories, the ones who could store and not waste energy, those with an efficient metabolism-- that is those people who took in calories and banked them into their body fat and stored against subsequent famine-- are the ones who would do the best under these circumstances.

那些寻找能量的人,那些储存而不浪费能量的人,那些有着高效代谢系统的人,那些人可以将摄入的热量储存为机体脂肪,以用于对抗即将到来的饥荒,在早先的情况下他们是最适应环境的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Just as with energy efficient cars, no one in America is ever interested until it's already very late, then they act like, hey, this is really new.

NPR: Letters: Zarif, the Dentist's Chair, and CFL Bulbs

By 2020 around 12 million boilers will have been replaced with more energy efficient models, it said.

BBC: Energy policies 'reduce bill rises'

To create a real-world example of how attainable, affordable and convenient a sustainable lifestyle can be, MyEnergi Lifestyle collaborators also announce plans to award a typical American family with delivery and installation of energy-saving products from each company, along with other leading energy-efficient products.

ENGADGET: Ford teams up with Eaton, Whirlpool and SunPower to create MyEnergi Lifestyle, hopes to reduce everyone's CO2 footprint