低温 ていおん生物 せいぶつ がくじゃなかったです
teionseibutsugakujanakattadesu

Noun
Desu Copula

The polite, past negative form of 低温生物学

1. Wasn't low-temperature biology.; Wasn't studying low-temperature biology.

Past/Perfective
Negative
Polite
Casual Register