In some faraway place, someone else is tipping a driver or waiter in a city they will never visit again; but you will benefit from his generosity, as someone will benefit from yours.

在某些偏远的地方，一些再不会光临这座城市的人向出租车司机和服务员付小费，但你却会因他的慷慨而得利，正如其他人会因你而得益一样。

youdao

Few customs offer as much insight into someone's personality than the age-old practice of tipping.

FORBES: Magazine Article