しつ欠陥 けっかん責任 せきにんでしょう
shitsuke' kanno sekinindeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 質欠陥の責任

1. Probably a quality defect.; Likely due to a defect.

Polite
Presumptive
Conjecture