采矿发生于地球表面的，因为在这里看到的，以及地下。

Mining takes place on the Earth's surface, as seen here, as well as underground.

youdao

采矿发生于地球表面的，因为在这里看到的，以及地下。

Mining takes place on the Earth's surface, as seen here, as well as underground.

youdao