SCEPTICS have wondered how long America could use its control of the world's reserve currency as an excuse to rack up huge debts.Now they may have their answer.

美国利用对世界储备货币的控制作为借口巨额借债，怀疑论者曾想过这种状况要持续多久，而现在他们有了答案。

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SCEPTICS have wondered how long America could use its control of the world's reserve currency as an excuse to rack up huge debts. Now they may have their answer.

美国利用对世界储备货币的控制作为借口巨额借债，怀疑论者曾想过这种状况要持续多久，而现在他们有了答案。

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SCEPTICS have wondered how long America could use its control of the world's reserve currency as an excuse to rack up huge debts.

一直以来，质疑者都想知道借助全球储备货币的控制权，美国到底能够维持其庞大债务到什么时候。

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In a nondescript building, down a largely unmarked hallway, is a series of rooms, each with a rack of servers and a "ground control station, " or GCS. There, a drone pilot and a sensor operator sit in their flight suits in front of a series of screens.

CNN: Computer virus hits U.S. drone fleet