tighten our purse strings

• vi. 节省开支

tighten our purse strings的用法和样例：

例句

用作不及物动词 (vi.)

1. Ma Gang expresses, these products save the Euramerican user that is purse shrink expenditure, make they won't decrease because of income and get the menace of trojan virus.
   马刚表示，这些产品将为钱包缩水的欧美用户节省开支，使他们不会因为收入减少而受到木马病毒的威胁。