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来源:雅诚德英语网
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。
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。