Any minute we could be spotted by enemy planes flying in and out of the world.

出入机场我们会随时被敌人的飞机发现。

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Any time we would surely be spotted by enemy planes flying in and out of the airfield.

我们随时都会被出入机场的敌机发现。

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Different from those sorrowful lovers, Ye Qing is like a happy bird flying in and out of her dormitory.

和那些悲伤的恋人不同，叶晴快乐地像只小鸟，整天从宿舍飞进飞出。

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Mr Ridgers insisted the airlines flying in and out of Newquay were "fully onside" and said there was "no chance of a fire sale".

BBC: Newquay airport

New York City plans to capture pesky geese that threaten planes flying in and out of airports and send them to Pennsylvania to be cooked for meals for the poor, city officials said on Thursday.

FORBES: Feeding the Poor of Pennsylvania on Geese From New York

ExpressJet, a unit of SkyWest Airlines, said it has so many flights on the chronically delayed list simply because it is flying in and out of Newark so much in the most congested airspace in the country.

WSJ: The Worst Flight in America