After several generations of population growth, people packed the landscape in densities so high that communal pueblos may have been a necessary outcome.

经过几代人的人口增长，人们以如此高的密度挤满了这个地区，以至于公共聚居地的出现可能是一个必要的结果。

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And after several generations, you'd have a new species, "he said."

“而且经过几代之后，就会形成一个新物种了，”他说。

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After several generations, some geniuses are born to rewrite history.

历经数代之后，一些可以改写历史的天才诞生了。

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In the Mesopotamian account, the gods themselves are created ; And they're not even created first, actually; The first generation of beings creates these odd demons and monsters, And gods only are created after several generations Marduk And the god of creation, Marduk, Is actually kind of a latecomer in the picture.

在美索不达米亚的描述中，众神本身也是被创造的,而事实上，他们还不是最先被创造出来的;,是最早的存在创造了那些恶魔和怪兽，而众神是在好几代之后才被创造的,而有创造能力的神是，他在创世的图景中是姗姗来迟的。

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After several generations evolution worked its (in this case black) magic: the flu had gone airborne.

ECONOMIST: Flu research and biological warfare

But unfortunately, Americans are not as good at entrepreneurship after they have been in the U.S. for several generations.

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The MP said the recruiting centre in his Pontypridd constituency recently closed without notice "after being a familiar and proud feature of the town for several generations".

BBC: Army careers offices: Seven of 12 close in Wales