深海 しんかい漁業 ぎょぎょうじゃありませんでした
shinkaigyogyōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 深海漁業

1. Was not deep-sea fishing.; Was not a deep-sea fishery.

Past/Perfective
Negative
Polite
Terminal Form