Firstly, the background and significance of the study was analyzed.
本文首先分析了课题研究的背景及意义。
The first chapter gives the background and significance of the study.
第一章论述了研究的背景和意义。
It proposes the background and significance of the study and the study framework of the thesis.
引言部分提出本文的研究背景、意义及研究方法等。
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