Part 2 explores the changes of the contemporary Kuans of Dong Nationality, including the evolution of content and structure and the evolution of social function.

第2部门介绍了当代侗族款制的变迁。其中包括内容构造的演化和社会功能的演化。

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The deep structure of Marxs theory on the evolution of social-economic formation is Hegel s idea of "the unification of history and logic".

马克思关于社会经济形态演进理论的深层结构，是黑格尔“历史与逻辑统一”的思想。

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Investigating the evolution of the lion social structure in such detail, Prof Packer and his team have had to look closely at the many theories for this lifestyle that have been suggested over the years, such as co-operative hunting, communal suckling of cubs and defence of young against attack.

BBC: Lions breed better if living near joining rivers