全文包括摘要、正文四章和结语。
The full text includes a summary of the body of four chapters and conclusion.
第二部分包括正文四章。
本文共包括六部分：导论、正文四章和结语。
This paper consists of introduction, four chapters and conclusion.
本文共包括六部分：导论、正文四章和结语。
This paper consists of introduction, four chapters and conclusion.
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