The agony that America is undergoing is not to be associated with breakdown as much as with the parturition of self-knowledge.

美国疋在经历与其说是伴随崩离析而来，还不如说是伴随自我识而产生。

As Owen has remarked, the benefit derived from the yielding of the separate pieces in the act of parturition by mammals, will by no means explain the same construction in the skulls of birds and reptiles.

正如欧文所说， 哺乳动物在程中产生单独碎片所带来好处，绝不能解释鸟类和爬行动物头骨中相同结构。