As he explains, the Geologic Time Scale is largely based on the stratigraphic record.

他解释说，地质时间尺度很大程度上基于对地层的记录。

youdao

As he explains, the Geologic Time Scale is largely based on the stratigraphic record.

他解释说，地质时间尺度很大程度上基于对地层的记录。

youdao