都江堰的設計非常科學，可以把水流裏的泥沙分出去，不會堵住河道。古人比現在人智慧多了。

來源: AprilMei 於 2023-05-25 10:57:29 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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