因为害怕发生飞机和鸟相撞事故，机场的消防署要求天鹅的主人剪短他的翅膀。
Fearing a bird strike, the airport fire service ordered Whooper's owners to clip his wings.
自莱特兄弟发明飞机以来，就一直发生鸟与飞机相撞事故。
Birds and planes have been colliding since the Wright brothers first took to the air.
鸟与飞行中的飞机相撞是飞机结构损坏的重要因素，严重时会引发机毁人亡的灾难性事故。
The clash between flying birds and airplanes frequently results in damage of aircraft structures which could even lead to aircraft crash and death of crew members in the most disastrous cases.
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