Reader's Digest Version: Idle for 30 seconds if you must. Longer than that: Turn it off.

读者文摘解答：30秒之内是可以挂空挡的，如果时间比这个长就关掉发动机。

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Currently, the servers found in most data centres continue to slurp energy even when their processors are idle because the server memory cannot be turned off without affecting performance.

现在，大多数据中心的服务器都在时刻“嗡嗡”着，即使它们的进程都是空闲的，这是因为这些服务器内存在没有性能保障时是不能被切断的。

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Since you are charged per deployed instance, you are better off combining as many processes together as possible, especially if the processes are usually idle.

由于你是为每个使用的实例付钱，因此你最好尽可能地组合多个进程，特别是在进程总是空闲的时候。

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Mr Spitzer, never one to be idle, is off to a running start.

ECONOMIST: Governors old and new: The second term-inator | The

CreditSights, a debt and equity analysis firm, says overcapacity in the printing industry keeps 36% off the presses and printing plans idle.

FORBES: Connect

For users that are accustomed to the hustle and bustle of daily life, but looking to treasure those busy moments, the PowerShot A2600 digital camera also comes equipped with a new ECO mode that assists with battery conservation by turning off the 3.0 inch LCD screen when idle.

ENGADGET: Canon PowerShot ELPH 130IS brings WiFi to the company's high-end point-and-shoot line