山洞窑洞洞穴经常指天然的洞穴岩洞溶洞等也可以指人工开凿的地洞地窖等
Caves and caves often refer to natural caves such as rock caves and karst caves, and can also refer to artificially excavated underground caves and cellars
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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