与二叠纪末期大灭绝有关的沉积层，成为我们下一个研究目标。

Sediments associated with the Great Dying became our next focus.

youdao

与二叠纪末期大灭绝有关的沉积层，成为我们下一个研究目标。

Sediments associated with the Great Dying became our next focus.

youdao