空洞 くうどう 現象 げんしょうでしょう
kūdōkagen shōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 空洞化現象

1. Likely hollowing-out phenomenon; Probably a hollowing-out phenomenon

Polite
Presumptive
Conjecture
Economics