a contemptuous smile的用法和样例：
- A contemptuous smile flitted across Injun Joe's face.
- smile in a scornful way; A contemptuous smile crosses one's face.
- He threw it away with a contemptuous gesture.
- Wharton gave a contemptuous shrug of the shoulders.
- A contemptuous action or remark; an insult.
- Wu Sun-fu broke into a contemptuous laugh.