手机充值卡 meaning in English

rechargeable card of the cell―phone

In the uk a contract usually lasts for 12 months and you have to pay every month for a year no matter if you don ' t use the phone
为什么在英国，有些人是和电话公司签的合同，有些人用的是手机充值卡呢？
As well as its staff of 800 , around 20 , 000 people earn a living either by running “ public call offices ” ( earning a princely - for - afghanistan $ 150 a month ) or selling pre - paid phone cards ( $ 50 a month )
和公司800名员工一样，约2万人在经营“公用电话” （每月150美元，在阿富汗属于高薪）或卖手机充值卡（月收入50美元）。