a few white hairs的用法和样例：
- She has already had a few white hairs.
- With dashing brows, sparkling eyes and a few white hairs in the sideburns, he looks very handsome just like a pulchritudinous film star.
- Jim: Can I see a few white shirts?
- His research also showed that most chat room users tell a few white lies about their height or the color of their hair.