unpaid
01
未付的, 无薪的
not yet given the money that was promised in exchange for something
例子
The employees were upset about the unpaid overtime hours they had been asked to work.
员工们对他们被要求工作的无薪加班时间感到不满。
02
志愿的, 无报酬的
engaged in as a pastime
03
未付的, 免费的
without payment
