Oh, this is called an eruptive vent.

原来这叫喷气口啊。

youdao

After the lava around the eruptive vent cooled down.

喷气口四周的岩浆冷却凝固之后。

youdao

After the lava around the eruptive vent cooled down.

喷气口四周的岩浆冷却凝固之后。

youdao