偷笑

例句：

1. 1. He smirked at the mischievous look on her face.
   他对她那淘气的表情露出了微笑。
2. 2. She couldn't help but smirk as she saw his embarrassing mistake.
   她看到他的尴尬错误时忍不住偷笑。
3. 3. The boss smirked when he heard that they had won the competition.
   老板听到他们赢得了比赛时，露出了一丝微笑。