For some it's a polypary, and for others, such as Professor Milne-Edwards, it's a single, solitary individual.

另外一些，像爱德华先生，却认为它是独立的、单一的个体。

We meet with this admission in the writings of almost every experienced naturalist; or, as Milne Edwards has well expressed it, " Nature is prodigal in variety, but niggard in innovation" .

我们在几乎每一位有经验的博物学家的著作中都会看到这种承认；或者，正如米尔恩·爱德华兹 (Milne Edwards) 所表达的那样， “大自然在多样性方面挥霍无度， 但在创新方面却吝啬” 。