Humans communicate through spoken or written words, singing, eye contact, touch, sign language, and body language.

人类通过口头或书面语言、歌唱、眼睛接触、触摸、手语和身体语言进行交流。

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Much of human interaction takes place unconsciously, through body language. Gestures, eye contact, and concepts of personal space are all things that robots are being taught.

大多数人类之间的互动是通过肢体语言在不知不觉中发生的。手势，眼神交流和私人空间概念全部是要传授给机器人的知识。

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When shooting, Galella doesn't look through the camera's viewfinder but instead makes eye contact: a technique rewarded by Warren Beatty in this 1979 photo.

这幅照片拍摄于1979年，在拍这幅照片的时候，格拉拉根本没有细看取景器，但取景器却正好完整地捕捉到了沃伦·比蒂。

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Learning to forge connections through eye contact helped her get audiences more engaged during presentations, says Ms. Kruse, vice president of learning at FortuneBuilders, San Diego.

WSJ: The Decline of Eye Contact

As an infant, I displayed a variety of facial expressions to signal my moods, pointed at objects of interest, and bonded with my parents through the power of eye contact.

FORBES: Body language expert blogs on leadership

During the contest, many avoided eye contact with rivals and fidgeted with their speed cubes, building up rhythm and speed as they rattled through 50 or more memorized sequences of moves.

WSJ: One Rubik's Cube, Many Knockoffs, Quintillions of Possibilities