Lice date back to ancient times, and they have lived as parasites on our bodies and scalps ever since.
虱子可以追溯到远古时代,他们生活的寄生虫,在我们的机构和头皮至今。
In the same way, species of lice on living animals and birds reflect the splits in animal and bird ancestry back to the time that lice first arose.
通过分析动物以及鸟类身上的虱子,同样能够折射出鸟兽的进化历程。
In the same way, species of lice on living animals and birds reflect the splits in animal and bird ancestry back to the time that lice first arose.
通过分析动物以及鸟类身上的虱子,同样能够折射出鸟兽的进化历程。
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