草原不適合生產穀物，你沒注意草原上不長樹的。畜牧業支持不了高人口密度。烏克蘭也太冷。

來源: 十具於 2026-02-21 13:41:38 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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