- cutting through literally miles of limestone.
凿穿了差不多数英里的石灰岩 - And when sulphuric acid dissolves limestone
硫酸在溶解石灰岩的同时 - it leaves behind gypsum,
也留下了石膏 - the basis of Lechuguilla's remarkable formations.
它们最终形成了龙舌兰洞的奇景 - And there was one set,
这里有一组景观 - more than a mile from the surface,
位于地表之下1英里多的地方 - that almost defied belief.
美得简直无法令人相信