當年光挖水庫挖的那些土方按現在的算法，就起碼多少萬億的GDP？人力挖一立方土，要多少錢？

來源: 研究研究於 2021-03-09 07:22:12 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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