When they take a vacation, money is no object. [=they don't worry about how much something costs] They always stay at the most expensive places.他们度假时，钱不是问题。他们总是住最贵的地方。

If cost was/were no object [=if cost did not matter; if we had enough money] we'd buy a new car instead of fixing the old one.如果钱不是问题，我们就会买新车而不是修旧车了。