猜測的成分居多，邏輯性不強。長城是火磚在山脊上而建，不太容易被水泡垮。莫非那時就有豆腐渣工程了？

來源: 郭大平於 2024-05-13 11:25:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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