如果地球与太阳的距离再大1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。

If the Earth-Sun distance were as little as 1 percent larger, runaway glaciations on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.

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如果地球与太阳的距离再大哪怕1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。

If the Earth-Sun distance were as little as 1 percent larger, runaway glaciation on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.

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我们的祖先以令人眼花缭乱的机会主义，适应了自上一个大冰期结束后，约1万年前普遍但不规则的全球变暖。

Our ancestors adapted to the universal but irregular global warming since the end of the last great Ice Age, around 10,000 years ago, with dazzling opportunism.

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