差別 さべつ侵食 しんしょくではありませんでした
sabetsushinshokudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 差別侵食

1. Was not discriminatory erosion.; Was not encroaching discrimination.

Past/Perfective
Negative
Polite
Formal Register
Geology