如果你想表现得很大方，那么5 - 10%的额外小费会让服务人员格外开心。

If you do feel like being generous, an extra 5-10%will really make your server very happy.

youdao

可是，当你去考虑到了吧员的主要收入都来自你的额外小费中时，你就做了件好事。

But, it's a good thing when you consider that bartenders are getting the majority of their income from the extra dollars we place on the bar.

youdao