“再分”用英语怎么说？

他获得了“原子可以再分”这一概念的专利权。He patented the idea that the atom could be split.这些生理小种还可以进一步再分.The races can be further subdivided.很多年前, 人们曾认为原子不能再分了.Many years ago, people thought that atoms could not be divided any further....