You know, plenty of porous basalt rock in a geothermally active zone is one such example.

你知道，地热活跃带中大量多孔的玄武岩就是这样的例子。

" Part of the pool is geothermally heated by drilling deep into the ground and extracting warm water from it, " says Scott-Whitby.

斯科特-惠特比说：“水池的一部分是通过钻到地下深处提取温水来加热的。”