retrogressive metamorphosis meaning in English

逆行变态
退行变态

And as the ends and ultimates of all things accord in some mean and measure with their inceptions and originals , that same multiplicit concordance which leads forth growth from birth accomplishing by a retrogressive metamorphosis that minishing and ablation towards the final which is agreeable unto nature so is it with our subsolar being
然而万物之目的及终局多少均与发端及起源相一致：即诞生后逐渐发育成长，随后则依自然法则，朝终局缩小退步，以后退之变化告终。吾曹在天日下之生存，亦同于上述众多相对关系。