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。

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.

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你的眼睛要看向我，使我可以知道你的眼神是否坚定。

Let your eyes rest upon mine, so that I may see if they be steady.

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马市上有个声音温和、眼神和蔼、灰色眼睛的男子。

At the horse fair there was a man with a gentle voice and kind grey eyes.

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