mouchoir

例句：

1. 1.The waiter gave him a generous tip for his excellent service.
   服务员因为他出色的服务给了他一个慷慨的小费。
2. 2. He always gives a small tip to the taxi driver when he gets home.
   他回家后总是给出租车司机一个小费。
3. 3. The waitress gave the elderly man a generous tip as a gesture of appreciation.
   女服务员作为感激之情，给了那位老人一个慷慨的小费。