Wind power is a green source of sustainable energy.

风能是一种绿色的可再生能源。

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As the most clean and green source of energy, Wind energy naturally becomes the focus of national research.

风能作为最清洁、环保的能源，自然成为各国研究的重点。

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Beijing green source and shandong and two large farms nissan 2 and 30000 cubic meters of methane gas, respectively.

北京德青源和山东民和两家大型养殖场分别日产2万和3万立方米沼气。

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What was once considered noise pollution could soon become a green source of energy.

FORBES: Written by Bryan Nelson

This supply of low-cost natural gas will allow the U.S. to transform its electricity production into a green energy source at scale.

FORBES: U.S. Energy Independence - So Close, Yet So Far

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

FORBES: A New Source of Green Energy: LEDs