对，还一个原因是那些石灰岩比较特别，既容易凿洞，又不会轻易坍塌，还有冬暖夏凉的保温隔热效应。。

来源: Helvetia 于 2024-05-20 15:18:35 [旧帖] [给我悄悄话] 本文已被阅读：次

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