Read Edit View history 溶洞 róngdòng solutional cave Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 溶洞 · róngdòng · solutional cave 2026/03/04 溶洞 róngdòng solutional cave a cave formed by the dissolution of soluble rocks, typically limestone 这个溶洞里布满了奇形怪状的钟乳石。 noun created sense Mar 4, 2026, 02:25 AM