That is the unvarying standard of my feelings.

这就是我一成不变的感情。

His daily life followed an unvarying pattern.

苦修者每天的生活都是一成不变的。

The names that can be named are not unvarying names.

无名，天地之始；有名，万物之母。

If a way can be described, it is not an unvarying way.

如果一种方式能够被描述，那它并不是永恒的方式。

If a name can be defined, it is not an unvarying name.

如果一个名称能够被定义，那它并不是永恒的名称。