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One and a half billion years ago, the Earth is a beautiful blue ball,
15亿年前，我们的美丽蓝色球体，
dotted with volcanic islands.
点缀着火山岛。
Over millions of years, a mysterious force rearranges these islands.
数百万年下来，我们发现有什么在重新排列岛屿，
Hidden beneath the ocean, the Earth's crust breaks into vast plates.
藏在海底的地壳裂成巨大板块，
But even deeper, the Earth's core is so hot that it generates movement in the rock beneath the crust.
深处的地心，地壳下的岩石因高温而移动，
These movements push and pull the plates
这些移动推拉地球各处的板块，
around the globe, carrying the oceans and islands with them.
同时带着海洋和岛屿。
Our planet is alive, and changing.
我们的星球是有生机的，是不断变化的。
Over 400 million years a vast new super continent takes shape.
4亿多年下来，一起全新的超大陆地成形，
It's called Rodinia.
它叫罗迪尼亚。
In the shallow waters surrounding Rodinia,
在罗迪尼亚周遭的浅水里，
stromatolites work their magic for more
叠层石发挥魔力20多亿年，
than two billion years, pumping oxygen into the atmosphere.
为大气注入氧气。
The temperature is 85 degrees.
气温是30摄氏度，
And the days are 18 hours long.
一天持续18个小时。
But this planet looks more like Mars than Earth.
但这时的地球看起来比较像火星。
To find life, we must fast forward through time.
要找到生命，我们就得让时间快转。
