species formation的用法和样例：
例句
- The remaining species form a well-supported clade, which in turn can be divided into smaller groups.
余下的物种形成一个良好的支持分支，这反过来又可以分为较小的团体。 - Because many polyploidy species are themselves multiply derived, Stebbins' estimate is probably closer to the true polyploid speciation rate.
由于许多多倍体物种是自身繁殖衍生，斯特宾斯的估计可能是更接近真正的多倍体物种形成率。
