優先 ゆうせん取組 とりくみ物質 ぶっしつじゃなかったです
yūsentorikumibusshitsujanakattadesu

Noun
Desu Copula

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

1. Wasn't a priority substance.; Wasn't a prioritized material.

Past/Perfective
Negative
Polite
Casual Register