The Maya knew that their lives depended on this water, 玛雅人固然知道 它们的生活离不开这些水
some of that is deposited as a mineral - 其中的一些就会沉淀为一种矿物
so the calcite forms decorations that hang from the ceiling - 方解石形成了悬在洞顶上的装饰物
Rivers that flow over limestone often seem to completely disappear. 流经石灰岩的河川 到最后似乎总是无影无踪
By ensnaring the insects that hatch in this cave, 通过诱捕洞穴内羽化的昆虫
these glow worms have solved the biggest challenge that permanent cave dwellers face - 这些萤火虫成功地解决了 终生穴居动物面临的最大难题
That ghostly blue light is the result of a chemical reaction 这些诡异的蓝光是一种化学反应的结果