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大卫:
Excuse me, I lost my metro card. What should I do? 
您好.我的卡丢了该怎么办?
工作人员:
I'm sorry. The metro card is non-registered. You should apply for a new one.
抱歉.卡片是不记名的.你得再办一张.
大卫:
OK. I want to do that now. By the way, if my card breaks, can I replace it?
好吧.我要再办一张.还有.如果卡坏了可以换吗?
工作人员:
Yes, you can exchange it if you take your receipt to Fuxingmen station.
可以拿收据到复兴门地铁站换.