The polar bear cubs emerge from the den in which they were born. 小北极熊从洞穴中探出头来
and it seems that most couplings were successful. 绝大多数的企鹅对都会成功繁衍出下一代
Eventually, the emperor penguins reach the place where they were hatched, 帝企鹅将最终到达它们出生的故乡
were once part of a continuous rocky plateau. 曾经是一整块岩石高地的一部分
Extremofile bacteria were found to be feeding on the rock itself. 嗜极细菌在岩壁上自我生长
that made scientists question how these caverns were formed. 使科学家们产生了 这个巨洞如何形成的疑问
Many of these crystals were made of gypsum, 许多结晶都是由石膏组成
They were about to discover some of the most exquisite formations ever seen underground. 因为他们发现了一些 地底世界中最精美的构造
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
but cave explorers were soon to make an even more astonishing discovery. 但是洞穴探险家们 很快又有了更惊人的发现