If you can speak impromptu Dachu the above-mentioned problem, do not have to read down, because you have mastered the secret of memory.
如果你能随口答出上述问题，不必往下看了，因为你已经掌握了记忆的秘诀。
Because there is no opportunity to conduct any kind of research before delivering an impromptu speech, you will have to speak from your own experience and knowledge.
由于在做即席演讲时没有机会做任何调整，你最好从自己的经验和知识来谈。
Because there is no opportunity to conduct any kind of research before delivering an impromptu speech, you will have to speak from your own experience and knowledge.
由于在做即席演讲时没有机会做任何调整，你最好从自己的经验和知识来谈。
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