危急 ききゅう存亡 そんぼう あきだったら
kikyūsombōno akidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 危急存亡の秋

1. If/when it were a crisis of survival…; If/when it came to a life-or-death autumn…

Tara Conditional