是啊，古人是很厉害的。我这次回去成都也会去看都江雁，秦国李冰的水利工程！公元前的。

来源: applebee3 于 2025-09-22 11:00:36 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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