Robots capable of social engagement help with loneliness as well as cognitive functioning, but the robot itself doesn't have to engage directly'u2014it can serve as an intermediary for human communication.

能够参与社交的机器人可以帮助缓解孤独感并发挥认知功能，但机器人本身并不需要直接参与，它可以作为人类交流的中介。

It's what makes human communication possible.

它使人类的沟通成为可能。

As methods of human communication go, a wink is quite versatile.

作为人类一种交流方式，眨眼睛有着很多复杂意思。