tipping pitman

例句：

1. 1. She gave the waitera generous tip for his excellent service.
   她因为服务员的优质服务给了他一个慷慨的小费。
2. 2. The restaurant owner decided to give asmall tip to the waitress who helpedhim with his meal.
   餐厅老板决定给那位帮助他用餐的服务员一个小费。
3. 3. It's customary to tip 10% of the total bill when diningout in many countries.
   在许多国家，外出就餐时习惯给账单总额的10%作为小费。