皮膚 ひふ呼吸 こきゅうじゃなかったです
hifukokyūjanakattadesu

Noun
Desu Copula

The polite, past negative form of 皮膚呼吸

1. Wasn't skin breathing.; Didn't breathe through skin.

Past/Perfective
Negative
Polite
Casual Register