At the mere hint of a threat, the insects adjust their preflight stance to flee in the , ensuring a clean getaway, they said in explain why flies so easily evade swipes from their human foes.

• 研究人员称，即使是很微小的危险信号，苍蝇在察觉后都能迅速调整好它的起飞姿势，然后向相反方向飞离，逃之夭夭。这一发现有助于解释为什么苍蝇如此难打。