地震 じしん前兆 ぜんちょう現象 げんしょうじゃありません
jishinzenchōgenshōjārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 地震前兆現象

1. It is not a pre-earthquake phenomenon.; It's not an earthquake precursor.

Negative
Polite
Terminal Form