咧着嘴笑

例句：

1. 1. She smiled at the camera and gave a thumbs up.
   她对着镜头微笑，竖起大拇指。
2. 2. He always smiles when he sees his friends.
   他一见到朋友就总是微笑。
3. 3. Her smile brightened the room with its warmth.
   她的微笑温暖了整个房间。