えいち あい あい領域 りょういきじゃなかったです
eichiaiairyōikijanakattadesu

Noun
Desu Copula

The polite, past negative form of HII領域

1. It wasn't my territory.; It wasn't my area.; It wasn't my domain.

Past/Perfective
Negative
Polite
Casual Register
Astronomy