20-03-17 smile: 微笑 He smiled at me. 他对我笑。 grin: 露齒而笑 This child often has a naughty grin on his face. 这个孩子经常顽皮地露齿而笑。 smirk: 得意地笑 The boy smirked at seeing his prank. 看着自己的恶作剧，小男孩得意地笑了。 yawn: 打哈欠 Yawning is co...