Develop the related subtopics around this central topic, connecting each of them to the center with a line.

围绕这个中心主题发散相关副主题，并将每个副主题和中心用一条线连接起来。

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This is the first academic periodical on the Chinese mainland sponsored by women and with female culture studies as the central topic.

这是中国大陆第一份由女性主办，以女性文化研究为中心话题的学术刊物。

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Language transfer has long been a central topic in Second Language Acquisition.

语言迁移一直是二语习得研究的中心问题。

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Now I'm going to move to the really important and central topic.

现在我将要开始最重要最核心的内容

耶鲁公开课 - 基础物理课程节选

Just to start at 50, 000 feet, you just participated in the G20 meeting last week, where global growth was a -- and threats thereof was a central topic of discussion.

WHITEHOUSE: President Obama at the APEC Business Summit

The central challenge we face in education is, as Steve Denning, my fellow Forbes contributor who wrote on this topic recently, said the basic factory model of education.

FORBES: The Single Best Idea for Reforming K-12 Education

"The more important topic is that someone stole our financial documents from our private bank and is trying to destabilise the Swiss central bank, " said Mrs Hildebrand in her statement.

BBC: Business