所有次要主题都从这个主题分流出去，从中间向外写下那些次要的议程项目，无所谓你按什么顺序列出来。

From this central idea all the sub-topics will flow. So outward from the center, you would write in the sub-agenda items.

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可以用topicsubject元素的hre f属性来表示主要主题，这个元素还包含subjectref元素来表示次要主题。

You can identify a primary subject with the href attribute of the topicsubject element, which also contains subjectref elements for the secondary subjects.

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精神病问题往往成了爱情故事这个主题之外的闹剧性次要情节。

The mentally ill tend to be relegated to slapstick sub-plots, alongside a central love story.

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