重厚じゅうこう長大ちょうだい産業さんぎょうでしょう
jūkōchōdaisangyōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 重厚長大産業

1. Likely a major industry.; Probably a large-scale industry.

Polite
Presumptive
Conjecture