a wicked smile的用法和样例：
- A wicked smile spread across Dinin's thin lips when he thought of some of those soldiers who would fall this night.
- The little boy had a wicked twinkle in his eyes.
- He plays a wicked game of bridge.
- She is in the grasp of a wicked man.
- A wicked curve ball; a wicked imitation.
- A wicked prank; a critic's wicked wit.