When a transaction is undertaken, a billing service finds you, recognizes when you began playing, and starts to charge you accordingly.

当交易执行时，会向您提供记帐服务，确认您何时开始了交易并据此开始对您收费。

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To put the icing on the cake, say this vendor starts to charge someone (perhaps the merchant and, indirectly, the consumer) every time its servers are used for authentication by this client.

再加些点缀，假设每次这种客户端将供应商的伺服器用于认证时，供应商就开始向某人(可能是贸易商，也可能间接地是客户)收取费用。

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If one of the servers you are in charge of runs out of disk space, you want to know about it before it starts to affect your users and clients.

如果您负责的其中一个服务器的磁盘空间耗尽，您希望在该情况影响用户和客户端之前了解该情况。

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Stanford faculty members, accustomed to the entrepreneurial culture, have already begun to clamor for a piece of the potential revenue whenever the university starts to charge for the classes.

NEWYORKER: Get Rich U.

To put that figure in perspective, a Karma driver with a 40-mile commute who starts each day with a full battery charge will only need to visit the gas station about every 1, 000 miles and would use just 9 gallons of gasoline per month.

ENGADGET: Fisker Karma gets EPA-certified 52MPGe, sales ready to begin

Assuming a car starts the day with a full charge, most drivers would be able to simply recharge at the end of the day.

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