And there was mile after mile of them. 它们绵延不绝
The walls were covered with the most delicate and fragile crystals. 石壁上布满了光洁美丽的脆弱结晶
and since this discovery more than 120 miles of passageways have been mapped. 自从那次发现之后 迄今已测绘了120多英里的地道
lies one of the longest, deepest and most surprising caves in the world. 存在着一座世界上最长、最深 也最令人惊奇的洞穴
And these extremofiles play another important role in this cave. 这些嗜极生物还在这个洞中 扮演着另一个非常重要的角色
despite the acid and the low levels of oxygen. 尽管这里是酸性低含氧量环境
It mixes with oxygen and the water, 与水中的氧发生化合反应
must wear respirators and carry monitors. 必须戴上防毒面具 并携带通话器