耐用 たいよう年数 ねんすうじゃありませんでした
taiyōnensūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 耐用年数

1. Was not durable.; Was not lifespan.; Was not years of service.

Past/Perfective
Negative
Polite
Terminal Form