You have to know your topic inside and out.
你需要彻底弄清你的主题。
When the lights go down and the spotlight is on you, no matter how much you know your topic, conveying the information suddenly seems daunting.
当所有灯光关掉，聚光灯对准你时，突然要演讲了，无论你对你的主题有多了解，此时总会令你有些怯步。
When the lights go down and the spotlight is on you, no matter how much you know your topic, conveying the information suddenly seems daunting.
当所有灯光关掉，聚光灯对准你时，突然要演讲了，无论你对你的主题有多了解，此时总会令你有些怯步。
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