優先 ゆうせん取組 とりくみ物質 ぶっしつではありませんでした
yūsentorikumibusshitsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 優先取組物質

1. Was not a priority substance.; Was not a substance given priority.

Past/Perfective
Negative
Polite
Formal Register