small change
noun
mass noun
1- coins of low value零钱, 小币值硬币。
1.1
- figurative a thing that is considered trivial〈喻〉小事情：
his wrongdoings were small change compared to a lot of happenings in the city.
他做的这点坏事和市里发生的那么多的事相比简直是微不足道。