living paycheck to paycheck：靠工資過日子。
paycheck：工資；薪金。
I don't like living from paycheck to
paycheck.
我不喜歡靠領薪水過日子。
I have been used to living paycheck to
paycheck.
我一直習慣以工資過日子。
She wears famous brands all day and
seems really rich, but actually she's
living paycheck to paycheck.
她整天穿著名牌衣服，看起來很富有，實際上她是靠工資過日子。