Know your audience and prepare your presentation based on that knowledge.

了解你的听众，在此基础上准备你的演讲。

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One of the keys to a successful presentation is product knowledge.

成功交流的关键之一就是推销员要了解产品。

youdao

One of the keys to a successful presentation is product knowledge.

成功交流的关键之一就是推销员要了解产品。

youdao