炭素 たんそ中立 ちゅうりつではありませんでした
tansochūritsudewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 炭素中立

1. Was not carbon neutral.; Was not carbon neutrality.

Past/Perfective
Negative
Polite
Formal Register