在地下水位线，被河流遗弃的远古洞穴中充斥着石笋和钟乳石。

Above the water table, ancient caverns abandoned by the river slowly fill up with stalactites and stalagmites.

youdao

在地下水位线，被河流遗弃的远古洞穴中充斥着石笋和钟乳石。

Above the water table, ancient caverns abandoned by the river slowly fill up with stalactites and stalagmites.

youdao