A descent; a sloping down.

下降；倾斜而下。

A falling off or away.

退化；衰败。

Decline; decay.

衰微；腐败。

The inflection of nouns, pronouns, and adjectives for number, gender, and case.

【文法】格变化；(名词、代名词及形容词的)语尾变化。