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Mary：
Excuse me, could you give me some change?
劳驾，你能换些零钱给我吗？
Clerk：
Let me see. Are dimes and quarters O.K.?
让我瞧瞧。一角和两角五分的硬币行吗？
Mary：
I want to make a long distance phone call.
我是想打个长途电话。
Clerk：
Then you'll need small change.
那你需要换小零钱。