有颜色的石头很漂亮

来源: 成功的77 于 2024-04-07 10:24:34 [旧帖] [给我悄悄话] 本文已被阅读：次

https://today.duke.edu/2018/06/duke-stone-quarry-campus#:~:text=Duke's%20quarry%20sits%20on%20the,flows%20of%20ancient%20volcanic%20activity.

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