The old man stood motionless except for the clasping and unclasping of his hands.

老人呆呆地站在那儿，只有双手不住地一开一合。

Her voice had sunk almost to a whisper, and she sat clasping and unclasping her hands about the handle of her sunshade.

她的声音低沉下去，几乎变成了喃喃自语，坐在那儿，两手一会握住、一会又松开阳伞的把手。

Infants discover their hands, turning them this way and that, mouth their fists, and experiment with clasping and unclasping fingers.

婴儿发现他们的手，这样那样地转动它们。他们把拳头放入口中，试着抓紧和松开手指。