the way in which money is controlled and spent by a group or organization （团体或组织的）资金管理
control the purse strings She controls the family purse strings very tightly. 她把家庭开支控制得非常紧。
tighten/loosen the purse strings (=reduce or increase the amount of money that is available) The government has tightened the purse strings for all departments. 缩紧/放松开支