spare change

基本解释

Using a jar to stash spare change is a tried-and-true trick.
用梅森罐来保存一些零钱是一种有效地方法。
It's a good idea to carry plenty of spare change when you're traveling — some places even charge extra for toilet paper!
旅行时带够充足的零钱会是一个好主意。一些地方甚至会需要额外付费，才有卫生纸。
The overall projection for the market following the incident has been positive, with many analysts claiming that the $1 bill may be an indication of other spare change lying around.
总体预测市场经过这一事件后趋势是看好的，许多分析师称，这1美元纸币的出现很可能表明还有其他多余的零钱无所事事地躺在某处哪。

Laithum is one of dozens in Detroit who spend their day trolling the streets begging for spare change.
NPR: Detroit Poverty Getting Worse
But if those workers have any spare change, could investing in Tiffany give them a share of the trickle-down effect?
FORBES: Gingrichonomics: Should Tiffany Trickle Down to Your Portfolio?
And, if you can only spare change for one type of glass?
FORBES: Is There A Best Beer Glass For IPA's?