a wisp of smoke的用法和样例：
- A wisp of smoke is curling up from a chimney.
- A wisp of smoke is curling up from the kitchen chimney.
- Man is more than a tiny vagary of whirling electrons or a wisp of smoke from a limitless smoldering.
- A wisp of hair had escaped from under her hat.
- A wisp of hair straggled across her ear.