这些人都是近亲结婚，遗传病非常地多

来源: lookatme.. 于 2007-12-20 13:37:16 [] [博客] [旧帖] [给我悄悄话] 阅读数 : 0 (0 bytes)
回答: The German nobility as a legally defined class was 由 gzlady 于 2007-12-20 13:28:24
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