This period, from 1 billion to 540 million years ago, is known as the "Cambrian explosion" after the riot of diverse life found in the fossil record.

10亿到5亿四千万年之间，就是在化石中发现许多生命之后的寒武纪大爆发时期。

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The extreme climate arisen from "snowball Earth" may promote evolution of life and trigger the "Cambrian Explosion".

“雪球地球”的极端气候环境变化，促进了生命的演化，造成了寒武纪生物大爆发。

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And then something incredible starts to happen: a tremendous expansion of life into multi-celled forms during a relatively brief period that scientists call the Cambrian Explosion.

接着，令人难以置信的事情发生了：在科学家称为寒武纪爆炸的一个相对短暂的时期内，生命极大地扩展成多细胞形式。

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