自然 しぜん放射 ほうしゃ増幅 ぞうふく こうではありませんでした
shizen hōshazōfuku kōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 自然放射増幅光

1. Was not naturally amplified light.; Was not natural radiation amplification.

Past/Perfective
Negative
Polite
Formal Register
Physics