In time, the internal shell was streamlined down to a long, chitinous structure, kind of like a backbone, called a gladius.

随着时间的推移，内壳被流线型化为长长的几丁质结构，有点像脊椎骨，被称为短剑。

Extreme cold such as liquid nitrogen is also exceptionally effective against a Xenomorph, and its thought that rapid changes in temperature cause the Xenomorph's chitinous armor to rapidly contract and expand causing it great pain.

像液氮这样的极寒对异形也格外有效，它认为温度的快速变化会导致异形的几丁质装甲迅速收缩和膨胀， 从而给它带来巨大的痛苦。