准备发言的时候，对发言题目深入研究很重要。
When planning a presentation, it's important to research the topic.
今天我发言的题目是《用智慧开启智慧之门门用勤奋开辟成功之路》。
Today the title of my speech is "wisdom to open the door of wisdom to open the road to success with diligence".
话题突然改变想法，从题目到语无伦次越来越大声表示，快速发言中而成。
Ideas that abruptly change from topic to topic expressed in loud, rapid speech that becomes increasingly incoherent.
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