动 fly，flit，float or flutter in the air，[口]volatilize；形 unexpected，accidental，unfounded，groundless；副 （形容极快） swiftly，speedily；名 [方]free wheel of a bicyc

[例句] 导弹从那架运输机的底部飞了出来。 The missiles emerge from the underbelly of the transport plane.

[例句] 一架大型客机在飞近希思罗机场时差点儿发生空难。 An airliner came close to disaster while approaching Heathrow Airport.