We can read this chapter of the earth's history... 我们可以在科罗拉多大峡谷的山壁上

80. They transformed its atmosphere.
    它们改变了大气
81. What happened to the carbon that poisoned the atmosphere?
    使大气有毒的碳去了哪里
82. It's still here, imprisoned in the earth's crust.
    它仍然在这里 被囚禁在地壳之中
83. We can read this chapter of the earth's history...
    我们可以在科罗拉多大峡谷的山壁上
84. Nowhere better than on the walls of Colorado's grand canyon.
    阅尽地球的历史变迁
85. They reveal nearly two billion years of the earth's history.
    它们揭示了近二十亿年的地球历史
86. Once upon a time, the grand canyon was a sea inhabited by microorganisms.
    从前 大峡谷曾经是微生物居住的海洋

来自《家园 第一部分 Home Part1》第 83 行