Here's what hard science reveals about eye contact: We know that a typical infant will instinctively gaze into its mother's eyes, and she will look back.
以下是自然科学对眼神交流的揭示：我们知道，一个典型的婴儿会本能地凝视母亲的眼睛，而母亲也会回以注视。
Something to think about as you avoid eye contact in the urban jungle.
想一想，在这都市丛林里的你是不是经常避免与人目光接触？
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.
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。
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