謝謝書班。讚好觀察，那是著名的喀斯特地貌，上億年的冰川岩溶。我也是有多地方還沒去過呢，咱們慢慢來。

來源: 廣陵曉陽於 2020-09-06 18:58:18 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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