【常用口语】Mad money是“疯狂的钱”？

常言道：

君子爱财，取之有道：

A gentleman makes money in right way。

今天我们来学习一些与Money相关的一个英语习语

Mad money

其真正意思是：a small sum of cash money kept aside or in reserve for emergencies, unforeseen expenses，备用金，俗称过河钱。

例句

Whenever we travel, my wife and I keep a small purse of mad money with us just in case we find ourselves in a difficult situation.

当我和妻子旅游的时候，总会准备一些备用金，以备不时之需。