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1·He has carried out extensive research into renewable energy sources.

他已经对再生能源进行了广泛研究。《牛津词典》

2·Today, renewable energy sources generate 12 percent of electricity in the U.S..

如今，美国所需电能的12%是由可再生能源提供的。

3·The Villa employs onsite renewable energy sources for heating, electricity and water.

此别墅运用了自备的可再生能源进行供热、供电和供水。

4·But it isn't only solar that's down in cost. It's other renewable energy sources, too.

成本下降不仅表现在太阳能上，也体现在其他可再生能源上。

5·We will develop clean and renewable energy sources such as wind power and solar energy.

开发风能、太阳能等清洁、可再生能源。

6·Almost by definition, renewable energy sources have low running costs but high up-front costs.

很明显，可再生能源的运营成本很低，但是前期投入很高。

7·Be a clean renewable energy sources, wind energy attracted considerable attention by people.

而风能作为一种清洁的可再生能源，已经引起了人们的广泛注意。

8·Like most renewable energy sources, ocean waves cannot compete with the low costs of fossil fuels.

与其他可再生能源相同，海洋波能与化石能源相比不具有价格优势。

9·Renewable energy sources and greater efficiency measures are also proliferating across the region.

可再生能源和其它一些高效率的供能系统，也在一这地区地区根繁叶密，蓬勃发展起来。

10·Wind energy conversion systems have become a focal point in the research of renewable energy sources.

风能转化系统已经成为可再生能源研究的焦点。