为了探究机器人的内心语言如何影响其行为，研究人员造了一个可以自言自语的机器人，叫佩珀。

To explore how inner speech might influence a robot's actions, the researchers built a robot called Pepper that speaks to itself.

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语言会对大脑产生很大的影响，相应地大脑又会极大地影响人的行为。

Words have a powerful effect on your brain, and in turn it influences your action greatly.

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为了帮助解答演讲的具体问题，我们将影响发言的无文字行为分为三大类型：肢体语言、眼神交流、面部表情。

To help answer specific questions about presenting a speech, we will consider three major categories of nonverbal behavior that affect delivery: body language, eye contact, facial expression.

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