We can smile when we are unhappy, and to that extent we can purposefully control some nonverbal cues, but we cannot control our blushing when embarrassed, perspiring when nervous, and pupil dilation when frightened.

• 当我们不快乐时，我们仍能微笑,并且在程度上我们能有目的地控制一些非语言的暗示,但我们无法控制当我们困窘时的脸红,紧张时的流汗,和被吓唬时瞳孔的扩张。