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4391 篇文章
There's always the same quantity of water on earth.
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There's always the same quantity of water on earth. 地球上的水含量是恒定的

quantity always same there's water of the earth on
The earth's water cycle is a process of constant renewal.
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The earth's water cycle is a process of constant renewal. 地球的水循环是一个持续更新的过程

renewal process earth's cycle constant water is of the a
These strata are the product of those billions and billions of shells.
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These strata are the product of those billions and billions of shells. 这些地层便是数以亿计的贝壳的产物

product strata billions shells those these of the are and
They reveal nearly two billion years of the earth's history.
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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

reveal history earth's nearly two they of the billion years
Nowhere better than on the walls of Colorado's grand canyon.
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Nowhere better than on the walls of Colorado's grand canyon. 阅尽地球的历史变迁

colorado's better walls grand canyon nowhere than of the on
We can read this chapter of the earth's history...
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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

chapter read history earth's we can of the this
Changed the destiny of our planet.
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Changed the destiny of our planet. 改变了地球的命运

destiny changed of the planet our
And their billions of descendants...
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And their billions of descendants... 以及他们的亿万后代

descendants billions their of and
of all yesterday's and today's plant species.
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of all yesterday's and today's plant species. 的关键祖先

yesterday's plant today's species of all and
A miracle of time,
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A miracle of time, 时间的奇迹

miracle time of a