Tipping used to be rare. Now the tip jar is pretty standard, though many customers ignore it.

但现在，柜台上摆放小费罐已相当常见了，不过很多顾客对此都视而不见。

youdao

To avoid getting confused about the British tipping system, you need to check your bill to see if a tip is included or not.

为了避免被英国小费制迷惑，你需要检查你的账单，看看有没有包含小费。

youdao

Even if you've had really extraordinary service, if the country you're visiting doesn't customarily practice tipping your servers there will not expect a tip.

即使你受到的服务非常好，但如果当地没有收小费的习俗，那么你就不用支付了。

youdao

It is clear that a lot of people, had a lot of information in this case, so the challenge of the case is going to be filtering out all of this background tipping to get to a specific tip that puts Gupta and Rajaratnam in a discussion about a specific stock.

FORBES: Rajat Gupta Trial Twist - Wire Taps but No Inside Info