如果你在没有手机和指南针的情况下迷路，并且确实找不到哪里是北方了，有一些技巧可以帮助你找到返回人类社会的路，其中一个是沿着陆地走。

If you get lost without a phone or a compass, and you literally can't find north, a few tricks may help you navigate back to civilization, one of which is to follow the land.

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汉唐时期，北方游牧民族与外界进行产品交换的根源深植于游牧社会自身。

During the Han-Tang period, the roots of the product exchange between the northern nomadic people and the outer world originated deeply from the nomadic society itself.

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它们充分的考古学实证向世人昭示：红山文化社会是新石器时代中国北方较为先进的经济社会。

Their full archaeological evidence proves that the Hongshan Culture society is the more advanced economic society in north of China in Neolithic Age.

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But if the South was a slave society the North was a market society.

如果南方是一个奴隶社会,那么北方就是一个市场社会

耶鲁公开课 - 美国内战与重建课程节选

It was beginning to be a market society even in the late eighteenth century.

甚至在18世纪晚期,北方就开始转型为一个市场社会了

耶鲁公开课 - 美国内战与重建课程节选

We're going to look largely at the nature of Northern society.

我们要大致了解下北方社会的性质

耶鲁公开课 - 美国内战与重建课程节选