interfertility meaning in English

互交可孕性

Taxonomic species are defined on phenetic discontinuities, not on interfertility .
分类学上的种是根据表型不连续性而不是根据互交可孕性来确定的。
If these species are not defined by interfertility , which obviously they are not , are they real , or just the convenient conventions of taxonomists
如果这些物种并不是互交可孕的，显然它们不是的，那么它们真的或仅仅是分类学者们便利的惯例吗？