Water was the main source of mechanical power, and by the end of the seventeenth century, England alone is thought to have had some 20,000 working mills.

水是机械动力的主要来源，而到了17世纪末，人们认为仅英格兰就有2万个左右的工作磨坊。

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We intend to take him and we intend to take power from every source and bring it back to the parliament.

我们打算接受他，而且我们打算从每一种资源获取权力，然后再把它带回议会里。

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Wind is now the world's fastest growing source of power.

风力是现在世界上增长最快的能源。

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They have a material that supplies electrons and a power source that lifts the energy level of those electrons.

VOA: special.2010.09.01

Similarly, divination. Divination is an attempt to discern the future that, once again, heads right to the source of power.

类似的还有占卜术，占卜是一种试图看清未来的法术,它的终极目标，也是神力的源头。

耶鲁公开课 - 旧约导论课程节选

And so Richard is learning a grammar of race even while he tries to work out how to use language as a source of power in his family.

所以理查在学习语言的艺术,虽局限于种族,就是他在家里受尽磨难时也在学习语言的魔力。

耶鲁公开课 - 1945年后的美国小说课程节选

Point Source Power, a project out of Lawrence Berkeley National Labs, has created a dung-powered fuel cell for emerging markets.

FORBES: Why Are Portable Fuel Cells Such A Flop?

Personally, I just think that solar makes the most sense as an energy technology, and the tech innovations in solar power are such that I expect it to be the most common source of power before the century is out.

FORBES: The Cost of Solar Power Is Expected to Decline 50% Over the Next Decade

Autonomous control over supply, via aggregation in unions, became their only source of power.

FORBES: Entrepreneurs are the New Labor: Part I