While packing up their belongings and preparing to leave the house, they discovered a copy of Action Comics No.1, which could fetch upwards of $250,000 when it goes up for auction.

正当他们收拾东西准备搬离时，他们发现了一本《动作漫画》创刊号，拍卖后可换来25万美元的意外之财！

youdao

The pilot spent fifty hours in a simulator -- a copy of the plane on the ground -- preparing for his ten-minute flight.

VOA: special.2010.07.07

Preparing documents as part of the discovery-turnover to opposing lawyers, I mastered the copy machine.

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