Crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.

哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。

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But crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.

但哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。

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Random genetic drift has certainly played a big role in human evolution.

随机漂变对人类进化的作用的确巨大。

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So it was a major change in human evolution where people started raising animals in large groups or started growing plants in large amounts.

这在人来演化史上是个巨大的变革,人类开始大规模饲养动物,或是大量种植农作物

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This is a really pretty dramatic change in human evolution and the question is: what happened?

在人类演化中,这是个戏剧性的变化,问题是,到底发生了什么

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It's dangerous to abruptly intervene in the evolution of human institutions.

在人文制度的演变中,突然的人为干预是很危险的

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New fossil evidence seems to confirm that a key ancestor of ours could walk upright consistently - one of the major advances in human evolution.

BBC: Fossil find puts 'Lucy' story on firm footing

As reported by Brett Arends in The Wall Street Journal, this all too familiar habit of buying high and selling low has its origins in human evolution.

FORBES: Buying High, Selling Low Still Popular After All These Years

That, at least, is the contention of David Puts, an anthropologist at Pennsylvania State University, in an upcoming paper in Evolution and Human Behavior.

ECONOMIST: Masculine traits