允许在章节标题中的短语标记。
如果你在使用提纲或笔记，用不同颜色的笔或其他东西标记出你在演讲中应该强调的观点或短语。
If you are using an outline or notes, highlight ideas or phrases you should stress in your speech with a different coloured pen or something.
在常见的方案中，需要标记有特殊语义的短语。
In a common scenario, you need to mark up phrases that have special semantics.
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