當時蘇聯設計師沒有考慮排沙口，後來在大壩上打一個洞一千萬，打了無數個。。。。。。。。

來源: alldayallyear 於 2013-07-14 21:49:32 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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