To express certain emotions,especially mirth,delight,or derision,by a series of spontaneous,usually unarticulated sounds often accompanied by corresponding facial and bodily movements.

• 笑为表达某种情感，尤指高兴、快乐或嘲笑而发的一阵自发的，通常是不清晰的声音，并常伴随着脸部和身体的运动。