fixity
/ˈfɪksəti/ 31If you talk about the fixity of something, you talk about the fact that it does not change or weaken. 恒定性
noun [具体名词]固定性，不变性；固定物
She believed in the fixity of the class system. 她坚信阶级制度恒定不变。
单词造句:
She believed in the fixity of the class system. 她坚信阶级制度恒定不变。