They had been persuaded to suspend legal challenges to the Bush-era rule—which appears to contravene the Clean Air Act (CAA) under which it falls—on the understanding that Mr Obama would fix it.

他们已被说服暂时停止对布什时代规则的法律上的挑战---而在削减的情况下，这看上去违反了清洁空气条例（简写为CAA）---在奥巴马将修改这个条例的条件下。

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That threshold, the CAA says, was provided on the basis of data from equipment-manufacturers; Rolls-Royce, the leading European maker of jet engines for airliners, has made no comment on this.

CAA说，这是设备生产商依据数据提供的临界点；劳斯莱斯，为航空公司生产喷气发动机的欧洲主要制造商，对此未做评论。

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The CAA added a 60 nautical-mile buffer zone imposed around high concentrations of ash in the skies was now close to Edinburgh, Carlisle, Blackpool, Liverpool and Manchester airports.

民航局继续说，大气层中围绕着火山灰的一个60海里左右的缓冲区域现在已靠近了爱丁堡、喀来耳、布莱克浦、利物浦和曼彻斯特机场。

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The report published on Tuesday - part-funded by the UK's Civil Aviation Authority (CAA) - looked more at changes in the average weight and height of passengers in the past few decades than the highly-publicised fears over so-called "traveller's thrombosis".

BBC: Civil Aviation Authority report

When she died at Taunton's Musgrove Park Hospital, she had cerebral amyloid angiopathy (CAA) - also known as congophilic angiopathy - a very rare form of dementia.

BBC: Carole Cross

In a sign that the businesses of sports and entertainment are fusing, at least for the major box office draws, six weeks ago CAA added high-flying sports agents Jim Steiner and Ben Dogra, who represent 57 NFL players, to its team.

FORBES: Magazine Article