Du Bois was concerned that race was being used as a biological explanation for what he understood to be social and cultural differences between different populations of people.

杜·波依斯担心，种族会被用来作为生物学层面上的一种解释，并用以说明他所理解的不同人群之间的社会和文化差异。

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Translated by Xu Yuanchong, this famous poem, with four couplets, was written by Du Fu (712-770, Tang Dynasty) when he was living and farming in Chengdu.

许渊冲翻译的这首著名四联诗是杜甫（712-770，唐代）在成都生活和务农时写的。

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He has designed productions for performance groups including Cirque du Soleil, the Metropolitan Opera in New York City, and Disney Theatrical Productions.

VOA: special.2009.09.23

Only after that failed four months later did he send Du Bois to the Miami-Dade police with the reams of evidence he had collected.

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