prepaid phone card

例句：

1. 1. I bought a prepaid phone card to save money on my phone bill.
   我买了一张预付费电话卡来节省我的手机账单。
2. 2. The prepaid phone card is a great way to save money on your phone bills.
   预付费电话卡是节省手机账单的好方法。
3. 3.She used her prepaid phone card to make calls and send text messages.
   她用她的预付费电话卡打电话和发短信。