皮膚 ひふ呼吸 こきゅうではありませんでした
hifukokyūdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 皮膚呼吸

1. Was not cutaneous respiration.; Was not breathing through the skin.

Past/Perfective
Negative
Polite
Formal Register