That is the focus of our research and the topic of this article.

那是我们研究的重点和本文的主题。

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Focus on one topic area and use no more than four bullets per slide.

集中一个话题，并且每张幻灯片不要多于四个关键点。

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Focus on one topic area and use no more than four bullets per slide.

集中一个话题，并且每张幻灯片不要多于四个关键点。

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