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。

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.

youdao

邦德推测，这种交替循环可能是海-水间循环变化的证据，因此也会影响地球的气候。

Bond hypothesized that the alternating cycles might be evidence of changes in ocean-water circulation and therefore in Earth's climate.

youdao

你知道，我仍然不是很清楚水文循环，也就是水在地球和大气之间的来回转移。

You know, I am still not too clear about the hydrologic cycle, the transfer of water back and forth between the earth and the atmosphere.

youdao