citibank的网站如是说“$0.42 for every $100 of the outstanding balance (which is the sum of the closing balance including unbilled installments) on your Ready Credit and/or Credit Card statement. There is no charge if there is no closing balance for that month.”
根据上文,如果没有closing balance 就不会收费。closing balance 指的是每月应该交付的信用卡费用没有按时交付对吗?可以科普一下吗?