中間 ちゅうかん けん発光 はっこう現象 げんしょうなら
chūkan ken hakkōgenshōnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 中間圏発光現象

1. If/when intermediate-zone luminescence occurs; If/when intermediate-zone light emission happens

Nara Conditional