species formation的用法和樣例：
例句
- The remaining species form a well-supported clade, which in turn can be divided into smaller groups.
余下的物種形成一個(gè)良好的支持分支，這反過(guò)來(lái)又可以分為較小的團體。 - Because many polyploidy species are themselves multiply derived, Stebbins' estimate is probably closer to the true polyploid speciation rate.
由于許多多倍體物種是自身繁殖衍生，斯特賓斯的估計可能是更接近真正的多倍體物種形成率。
