从杰斐逊时代到霍勒斯·曼时代，这之间发生的什么事情打破了这个平衡？

What had happened between the generation of Jefferson and the generation of Horace Mann to tip the balance?

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弗吉尼亚州费尔法克斯县警察局的一位女发言人表示，目前没有迹象显示凯勒曼的死与谋杀有关。

A spokeswoman for the Fairfax County Police Department in Virginia said there were no signs of foul play in Mr. Kellermann's death.

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奎勒和斯特拉斯曼的研究揭示出黏菌世界没有被这群骗子摧毁的原因。

Research by Dr. Queller and Dr. Strassmann has revealed some reasons the slime-mold world has not been overwhelmed by these cheats.

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