like the eye didn't emerge all of a sudden,

比如说眼睛并不是突然之间出现的
but rather have parallels both within other existing animals

它既存在于其他现存动物
and across human and biological history.

也始终贯穿人类和生物史
This evidence comes in different forms.

支持进化论的证据有不同的类型
There is fossil evidence for different body parts

不同身体部位的化石
suggesting that they have evolved from more rudimentary form.

证明他们是从更原始的形态进化而来的
There is vestigial characteristics.

其中也有一些退化特征
And what this means is there are characteristics that

这说明有些人体特征
human bodies have that are somewhat inexplicable,

是难以解释的
like the human tailbone or goose-bumps,

比如尾骨和鸡皮疙瘩
unless you view them--the human body in its current form

除非你将现在的人体形态
as modifications from a previous form.

视为是先前形态的进化