支付小费

Waiter: Do you want some dessert?
服务员：要些甜点吗？

Guest: No, thank you. Check, please.
顾客：不要了，谢谢。结账。

Waiter: Wait a moment. I will calculate it for you. Your bill comes to $36.
服务员：稍等，我帮你们算一下。您的账单总共是36美元。

Guest: Here are $40.Keep the change. That's my tip for you.
顾客：这里是40美无。不用找钱了。当是我给你的小费。

Notes:
calculate v.计算
tip n.小费