when the little there is is locked up as ice. 那里仅有的一点水也结成了冰
A third of the land on our planet is desert. 我们星球上1/3的陆地是沙漠
Water is the creator of most caves, 水是大部分洞穴的建造者
There is, in fact, more life here than anyone would think possible, 事实上 这里的生物数量 远比人们预料的更多
but the biggest surprise is something altogether more bizarre. 不过更大的惊奇莫过于 那些更奇怪的东西
but venturing deep into the cave is very dangerous indeed. 但是深入洞穴必然极度危险
that an early warning system is essential. 所以即时预警设备是最重要的
is actually coloured white with sulphuric acid. 竟然被硫酸染成了白色