交配 こうはい ぜん隔離 かくりではありませんでした
kō haizenkakuridewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 交配前隔離

1. Was not pre-mating isolation.; Was not isolated before mating.

Past/Perfective
Negative
Polite
Formal Register