Head movements: more actors involved in facial expressions, but also the most important and direct emotional expression window.

头部动作：更多涉及演员的面部表情，也是情感表达最重要和直接的窗口。

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It includes gestures, head movements, facial expressions, eye behaviors, postures and other displays that can be used to communicate.

它包括手势，头部动作，面部表情，眼睛的行为，姿势和其他可以用来交流的显示器。

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