这个虚构的简短例子是一个汽车租赁公司的网站系统。

Consider this very brief use case for a hypothetical browser-based software system for an auto rental company.

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我们不会跟踪你——只有当你停止租赁时，你使用过的汽车才会被系统重新定位。

"We do not know where the cars are while they are being used," he says. "We're not tracking you-the car shows up in the system only when you terminate the rental."

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Car2Go计划使用GPS系统帮助用户定位可供租赁的汽车位置。

Car2go USES GPS devices to help customers locate available cars.

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