不改变的

Old people don't like to vary their habits.

老年人喜欢变他们的习惯。

The epigenome is a molecular marking system that controls gene expression without altering the DNA sequence.

Image credit: Dreamstime表观基因是变DNA序列的前提下控制基因表达的分子标记系。

Constituents that can be substituted for one another without loss of grammaticality belong to the same syntactic category.

可以相互替换而又变语法属性的成分属句法类型。