望遠 ぼうえん きょう級数 きゅうすうではありませんでした
bōenkyōkyūsūdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 望遠鏡級数

1. Was not a telescopic series.; Was not of telescopic grade.

Past/Perfective
Negative
Polite
Formal Register
Mathematics