prepaidused to describe a service that you pay for before you receive or use it 预付的◆ppd mobile phone/cellphone customers 预付费移动电话／手机用户
post-paid, , postpaidmarked on goods to show that postage is included in the price or has been paid by the sender 邮资已付的◆All CDs cost $12 ppd (US). 所有 CD 唱片 12 元，含邮资。