麻薬 まやく探知 たんち けんではありませんでした
mayakutanchikendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 麻薬探知犬

1. Was not a drug detection dog.; Was not a narcotics dog.

Past/Perfective
Negative
Polite
Formal Register