こう化学 かがくスモッグ注意 ちゅうい ほうだったら
kōkagakusumogguchūihōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 光化学スモッグ注意報

1. If/when photochemical smog is warned of.; If/when a photochemical smog warning is issued.

Tara Conditional