ごく ちょう音速 おんそく滑空 かっくう兵器 へいきだったら
gokuchōonsokukakkūe ikidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 極超音速滑空兵器

1. If it were an extremely supersonic gliding weapon.; Were it an extremely supersonic gliding weapon.

Tara Conditional
Military