新生代是一个充满了地壳巨变和剧烈火山活动的时期。

The Cainozoic period, was a period of upheaval and extreme volcanic activity.

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新生代是一个充满了地壳巨变和剧烈火山活动的时期。

The Cainozoic period, was a period of upheaval and extreme volcanic activity.

youdao