万能的吧友，可以给我读这一段的音频吗，最好停顿明显的，谢谢了【But experts in the study of communication through body movement are not yet prepared to spell out an exact dictionary of gestures, as body movements can mean many things. For example, a student in conversation with a professor may hole the older person's eyes a little longer than usual. This gesture can be a sign of respect and love; it can be a small challenge to the professor's authority ; or it can be something else entirely.】