腐敗 ふはい分子 ぶんしじゃありませんでした
fuhaibunshijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 腐敗分子

1. Was not a corrupt element.; Was not a bad influence.; Was not a rotten apple.

Past/Perfective
Negative
Polite
Terminal Form