cavern water的用法和樣例：
例句
- As a result of continuous water erosion, in the course of time a huge cave was formed.
由於水的不斷侵蝕，日久天長就形成了一個大溶洞。 - Caves form when water infiltrates limestone.
水滲透石灰石則形成洞穴。 - Water is more valuable than gold in the Barrens, and the locations of hidden watering holes are among the residents' most closely held secrets.
在荒漠之地，水是比金子還重要的東西，那些隱藏水的洞穴的所在地是居住者們視為最重要秘密之一。
