However MIT's method to convert light and heat into electricity is much more efficient than previous versions.

然而，MIT将光和热转化为电力的方法比之前的版本要更有效。

youdao

Methane leaks have long been a concern because while methane dissipates in the atmosphere more quickly than carbon dioxide, it is far more efficient at trapping heat.

甲烷泄露一直以来就是一个隐忧因为虽然甲烷在空气中比二氧化碳分散地快但是它保温的效率却更高。

youdao

Because this ice is initially very thin, the efficient release of heat from the ocean continues for some time, causing a rapid growth of the new sea ice.

由于刚开始这些冰层很薄，海洋中热量的释放还会持续一段时间，这又使得新海冰的形成速度加快。

youdao

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

VOA: special.2009.10.27

Among the energy-saving options, two promising technology switches are the electrification of transportation (electric vehicles can be about four times as energy-efficient as standard fossil-fuel vehicles) and the use of electric-powered heat pumps to deliver winter heating and hot water (heat pumps can be four times as energy-efficient as standard heaters).

CNN: Commentary: Let's get real about alternative energy

He also wants to speed up sales of home appliances that use efficient heat pumps--made, of course, by domestic manufacturers.

FORBES: Magazine Article

The new regulations in Massachusetts, which will take effect in June, will promote smaller and more efficient combined-heat-and-power biomass facilities that require less fuel and have lower net carbon dioxide emissions over time.

FORBES: Massachusetts Addresses "Biomass Loophole" and Limits Subsidies