Workers will also add energy efficient lights and improved building control systems.

VOA: special.2009.05.22

We have to invent a process, a chemical extraction process that will make the production of magnesium cheaper so that we will have the opportunity to avail ourselves of energy-efficient materials.

我们必须发明出一种方法，一种化学提炼方法,能够使生产镁变得更便宜,那样我们才有机会,让我们自己用上高效能的材料。

麻省理工公开课 - 固态化学导论课程节选

So it's a very efficient way of securing energy.

因此这是一个高效的保存能量的方法

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Chinese Society Entrepreneurs and Ecology represents 130 businessmen who have embraced the principles of green economy: one builds energy efficient high-rise buildings;

VOA: standard.2010.02.24

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

The walls were built extra thick to save heat and energy-efficient appliances kept energy use low.

VOA: special.2009.10.27

And how the systems that we have designed for the house and we've used for the house how efficient they are and how little energy they use."

VOA: special.2009.10.27

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 hotels use energy-saving lights and appliances, buy local wine and produce for their restaurants, compost organic waste, donate old linens and towels to charities, and use an energy-efficient, "green" local laundry.

VOA: standard.2009.03.30

"The next thing is to work out how technology can be transferred from rich countries to poor countries and this will involve things like investment in renewable energy, investment in wind power and solar, investment in more efficient power stations,"

VOA: standard.2009.11.04

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