ちょう好熱 こうねつ せい細菌 さいきんではありませんでした
chōkōnetsuseisa ikindewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 超好熱性細菌

1. Was not a super-thermophilic bacterium.; Was not an extremely heat-loving bacterium.

Past/Perfective
Negative
Polite
Formal Register