こうレベル放射 ほうしゃ せい廃棄 はいき ぶつでしょう
kō reberuhōshaseiwa iki butsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 高レベル放射性廃棄物

1. High-level radioactive waste, probably.; It will likely be high-level radioactive waste.

Polite
Presumptive
Conjecture