But they may look back on 2011 and see three events that undermine that story: the downgrade of America's credit rating; the last flight of the space shuttle; and Mr Jobs's death.

但回头看看2011年，有三件事足以打破他们心中这个神话：美国信用评级下降；航天飞机项目终结；还有乔布斯的去世。

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The Instrument Rating gives the ability to control the aircraft without reference to the ground or horizon, using flight and navigation instruments.

仪表等级赋予飞行员控制飞机的能力，而不用参考地面或地平线，只使用飞行和导航仪表。

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The move came hours after ratings agency Standard & Poor's cut Russia's credit rating to one notch above junk, citing a flight of capital from the country.

前几个小时，标普评级机构引证了俄罗斯资本外流，并将俄罗斯的信用等级下调至仅比垃圾级高一级。

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Within a year Travelport hopes to give every single flight a carbon rating, taking into account the plane, the type of fuel used, and other data points.

BBC: smokestack in Beijing

But the airline's chances of surviving in some form have been helped by a ruling by America's Federal Aviation Administration on July 30th, which downgraded Mexico's flight-safety rating a notch, owing to a lack of air-traffic controllers.

ECONOMIST: Mexican airlines