cave

/keɪv/

a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea

中文释义：洞穴；山洞

The explorers discovered a hidden cave deep in the forest.

探险家在森林深处发现了一个隐藏的洞穴。

Ancient paintings on the cave walls provide clues about early human life.

洞穴墙壁上的古代绘画提供了关于早期人类生活的线索。