第一章着重探讨了选题的目的与意义。
Chapter one mainly talked about the purpose and meaning of this study.
第一部分是绪论，阐明了本研究的选题背景、目的与意义、主要内容和方法。
Part One is an introduction, elaborating the backgrounds, significance, purpose, main contents and methods of this study.
前言介绍白语的研究状况和本文的选题目的、意义和依据的理论与方法。
Preface introduces not only the aim and significance of choosing this topic, but also the theory and method this paper bases on.
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