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大卫:
Excuse me, my metro card is broken. Where can I get it replaced? 
不好意思.我的一卡通坏了.该去哪儿换啊?
工作人员:
We can't replace your card here. You would need to go to Xidan Station to replace it.
这儿换不了.你得到西单站去换.
大卫:
Can I have the value of the card refunded?
能退卡的工本费吗?
工作人员:
If the card is damaged, the value of the card cannot be refunded.
如果卡有损伤.卡的工本费就不能退了.
大卫:
What about the balance on my current card?
那卡里的余额呢?
工作人员:
The balance of your current card will be transferred to your new card.
卡里的余额会转到新卡里.
大卫:
OK, thanks a lot.
好的.谢谢.