單幹戶用機械成本太高，必須先合作化以後，才能將成本降下來，這麽簡單的道理不對嗎？

來源: f2022f 於 2025-08-19 16:41:45 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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