In the preface, I first introduced the research backgrounds research purpose and method of this paper.
本论文首先在引言部分介绍了该论题的研究背景、研究目的和研究思路。
On this basis, this dissertation stresses the importance of the advertising purpose, and put forward the research purpose and method by applying relevance theory in this dissertation.
在此基础，论文强调意图的重要性并提出了关联理论研究的目的、方法及意义。
Mainly introducing three aspects: the research purpose, range of research and the method of study.
主要阐述了研究目的、研究范围和研究方法三个方面。
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