小口角

例句：

1. 1. She had a small mouth and a cute smile.
   她有一张小巧的嘴巴和可爱的微笑。
2. 2. The little girl's small mouth made her look very cute.
   那个小女孩的小嘴巴让她看起来很可爱。
3. 3. He had a small mouth, which made him look more serious.
   他有一个小嘴巴，这让他觉得更严肃。