Extracting heat from very hot, dry rocks presents a more difficult problem: the rocks must be fractured to permit the circulation of water, and the water must be provided artificially.

从极热的而干燥的岩石中提取热量，暴露出了一个更加困难的问题：必须击碎岩石以保证水的循环，而水必须是人工提供的。

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Geothermal power stations tap aquifers heated by contact with hot rocks in volcanic regions-or, in hot but dry spots, they pump water past such rocks to heat it up.

地热发电厂利用火山地区——或者地温高且干燥的地点——的干热岩体传导热能给含水层畜热，然后将水注入含水层利用热岩体对其加热并使之汽化。

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Fracking is the technique behind the new "enhanced geothermal systems" that extract energy from rocks which are hot enough, but too dry, to produce steam.

水力压裂法是增强型地热系统的技术支撑，这个系统是从炽热的、很干的岩石中提取热量来产生蒸汽。

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