選択 せんたく てき夫婦 ふうふ別姓 べっせいだったら
sentaku teki fūfube' seidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 選択的夫婦別姓

1. If/When selective separate surnames…; If/When choosing separate surnames…

Tara Conditional