Fed by countless drips and trickles, the subterranean river carves ever deeper into the rock.

由无数水滴和细流汇聚而成的地下河流深切入岩。

" There can be no doubt; a subterranean river is flowing around us."

“毫无疑问，一条地下河正在我们周围流淌。”

No one had suspected, indeed, that petroleum existed practically in the form of great subterranean rivers, lakes, or even seas.

事实上，没有人怀疑石油实际上以大地下河流、湖泊甚至海洋的形式存在。

From Greenland: New simulations indicate that a rocky valley detected under the island's ice sheet may contain a 1,600-kilometer-long subterranean river,flowing from central Greenland to its northern coast.

来自格陵兰岛：新的模拟表明，在该岛冰盖下探测到的岩石山谷可能包含一条 1,600 公里长的地下河，从格陵兰岛中部流向其北部海岸。