相手 あいて選択 せんたく接続 せつぞく機能 きのうだったら
aitesentakusetsuzoku kinōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 相手選択接続機能

1. If the opponent selection connection function…; When the opponent selection connection function…

Tara Conditional
Computing