And though several European airlines conducted successful test flights in the danger zone, the engines of a Finnish military jet suffered considerable damage as a result of breathing in the ash.

尽管几家欧洲航空公司成功进行了穿越火山灰区域的测试飞行，但是因发动机吸入火山灰，芬兰一架喷气式战机损失惨重。

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For one thing, the European Aviation Safety Agency says that there is currently no consensus as to what is an acceptable level of ash in the atmosphere.

首先欧洲航空安全局表示：大气中可接受水平的灰尘标准目前尚无定论。

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Mr Obama has been forced, because of the ash cloud, to fly to London tonight for the next part of his European tour.

由于火山灰的影响，奥巴马被迫在今晚飞往伦敦，为欧洲之行的下一站做准备。

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The disease was first observed as a new form of ash dieback in Poland in 1992, and has since spread to ash trees in many European countries.

BBC: Ash fungus genetic data released

But Brian Flynn, deputy head of operations for Eurocontrol, told the BBC that while half of the European landmass could be clear of ash cloud, that did not mean half of the flights could go ahead.

BBC: EU emergency talks called on volcanic ash air chaos

Should that match in Italy go ahead if European air travel resumes following the volcanic ash fallout from Iceland, Inter boss Jose Mourinho will have eagerly noted Espanyol's success in nullifying Barcelona's star-studded line-up.

CNN: STORY HIGHLIGHTS