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
yūsentorikumibusshitsudewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 優先取組物質

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

Negative
Polite
Formal Register