unpaid expenses

• 未付费用

unpaid expenses的用法和样例：

例句

1. Regarding health care expenditure, the out-of-pocket expenses kept increasing although the Global Budgeting policy had curbed the dental expenditure growth.
   在医疗支出方面，牙医之全民健保费用受到控制，但自付费用仍持续上涨。