Chatty teenagers could be the world's next renewable energy source.

话多的青少年可能成为世界新一代可再生能源。

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Biofuels have been around for a long time and they are the least expensive renewable energy source.

生物燃料已经被使用了很长时间，并且它也是最便宜的可再生能源。

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The turbo boost gauge is calibrated by tree ICONS, a playful reminder of the car's renewable energy source.

汽轮帮助计量器校准树是图标，顽皮的提醒我们汽车的可再生能源。

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If properly managed, clearing and replanting trees in a 30-year cycle creates both a renewable source of energy and maximum rubber production.

VOA: standard.2009.09.13

Dams offer a renewable energy source, providing the means for irrigation, transportation and flood protection.

CNN: Study opens floodgates on dam removal

China is already investing billions of dollars to substitute hydropower (which counts as a renewable energy source) for coal and gas in electricity generation.

FORBES: Pollution And Prosperity

Wind is the fastest-growing renewable energy source for electricity generation in the U.S., and DOE estimates that 20 percent of the energy consumed in the U.S. could come from wind power by 2030.

FORBES: 'Icebreaker': Offshore Wind Making Waves in Energy and Economic Development