But with half the world's limestone still to be explored, 但世界上仍有一半石灰岩洞尚未被开发

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  1. The discovery of life that exists without drawing any of its energy from the sun
    生命彻底脱离太阳能量 却依然生存的现象
  2. shows us once again how complex and surprising the underground world can be.
    再一次向我们展示了地底世界 是多么的复杂和惊人
  3. Each year explorers chart over a hundred miles of new cave passages.
    每年 探险家们都会测绘 上百英里新的洞穴通道
  4. But with half the world's limestone still to be explored,
    但世界上仍有一半石灰岩洞尚未被开发
  5. who knows how many Lechuguillas are still waiting to be discovered?
    谁知道还会有多少个龙舌兰洞 等着人们去发现呢
  6. [The End]
    [本集结束]

来自《行星地球 第一季 第四集 Planet Earth S01E04 洞穴》第 350 行

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