years

360 篇文章
But more than half a billion years ago,
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But more than half a billion years ago, 但是五亿多年前

than more but billion half ago years a
530 million years ago,
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530 million years ago, 5.3亿年前

million ago years
like their pioneering relatives millions of years ago.
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like their pioneering relatives millions of years ago. 数百万年前它们富有探索精神的亲戚们 也是这样做的

pioneering relatives millions like their of ago years
Today, millions of years later,
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Today, millions of years later, 数百万年后的今天

later today millions of years
For nearly two billion years,
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For nearly two billion years, 在将近20亿年的时间里

nearly two for billion years
Volcanoes had been erupting for millions of years.
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Volcanoes had been erupting for millions of years. 火山已经喷发了数百万年

had erupting volcanoes millions been for of years
For billions of years,
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For billions of years, 数十亿年来

billions for of years
can trace its heritage back four billion years.
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can trace its heritage back four billion years. 都可以追溯到40亿年前

trace back heritage can four its billion years
continue to support life, just as they have for billions of years.
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continue to support life, just as they have for billions of years. 数十亿年如一日 持续支撑着生命

billions continue support life just they for of have as to years
when Earth was stable for 100 million years.
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when Earth was stable for 100 million years. 地球保持了一亿年稳定状态

stable was million for when earth years