在非热逸过程中，由于化学反应或粒子与粒子之间的碰撞，原子因受到弹射而达到逃逸速度。
In nonthermal escape, chemical reactions or particle-particle collisions catapult atoms to escape velocity.
假如这些冰层因撞击的物体而迅速汽化蒸发的话，那么膨胀的气体很有可能帮助弹射出去的碎片达到逃逸速度。
If the ices had been rapidly vaporized by an impacting object, the expanding gases might have helped the ejected fragments reach escape velocity.
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