成年 せいねん しゃ喫煙 きつえん禁止 きんし ほうであれば
miseinensha kitsuenkinshihōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 未成年者喫煙禁止法

1. If it were the underage smoking ban law; If the underage smoking ban law existed

Ba Conditional
Law