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A: I need to copy a document immediately.
B: We have a copy machine in our computer lab, located on the first floor.
A: Great! How much is it for a copy?
B: The price per copy is ten cents.
A: That sounds reasonable. I'll be down there immediately.
B: THere shouldn't be any long lines, sir.
n. 文件，公文，文档
vt. 记载，(用文件
