经过五代人的耕耘，这片土地太湿了，不适合种植农作物。

Over five generations the land has been too wet for cropping.

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中国和印度的人均收入分别是韩国的1/4和1/10，等到他们和韩国一样富，那还要经过很多代。

If China or India—with incomes one-quarter and one-tenth Korea’s levels—wait until they are as wealthy, many generations will pass.

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这种细小真菌经过数万代繁殖之后，一些新的特征开始出现在他们身上。

New characteristics may begin to present themselves as the tiny fungi go through tens of thousands of generations.

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Will the best regime be a small closed society ? that through generations has made a supreme sacrifice towards self-perfection? Think of that.

最优的政体会是一个小型封闭的社会吗,经过多代之后，已壮烈地牺牲于自我完善之中,想想这个问题。

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