Riyadh can still be relied on to use its spare capacity to keep prices under control.

市场仍可指望沙特动用起其闲置产能，把价格维持在可控范围内。

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On Sept. 11, 2001, in Akamai's control room, engineers and technicians worked furiously to direct the crush of Web traffic to every spare server.

在2001年9月11日，Akamai的控制室里，工程师和技术员拼命的引导网络通信到每台备用的服务器上。

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There will be a spare control moment gyroscope, a spare nitrogen tank assembly and a spare ammonia tank assembly.

空间站将会有一个备用的力矩控制陀螺仪，一个备用的氮气储罐群和一个备用的氨储罐群。

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At what point will Democrats have the spare bandwidth to address gun control?

WSJ: Strassel: The Real Gun-Control Consensus

In other words, people who had substantive discussions with their doctor about their end-of-life preferences were far more likely to die at peace and in control of their situation, and to spare their family anguish.

NEWYORKER: Letting Go

Frederick, Maryland (CNN) -- The Federal Aviation Administration on Friday told 149 regional airports across the country it would begin closing their air traffic control towers in April, but said it would spare another 40 towers that had been on the chopping block.

CNN: Who's in the tower? At some regional airports soon: Nobody