Xenomorphs, or Aliens, are a parasitic species who's real origins are unclear.

Xenomorphs，或外星人，是一种寄生物种，其真正的起源尚不清楚。

Anyway, almost every living creature has at least one parasitic species that can infect it, and dinosaurs were no exception.

不管怎么说， 几乎每一种生物都至少有一种可以感染它的寄生虫，恐龙也不例外。