収穫 しゅうかく逓減 ていげん法則 ほうそくでしょう
shūkakuteigenno hōsokudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 収穫逓減の法則

1. Law of diminishing returns.; Probably the law of diminishing returns.

Polite
Presumptive
Conjecture