The grammatical meaning of a sentence refers to its grammaticality, that is its grammatical well-formedness.

句子的语法意义指的是它的语法性，即语法法性。

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

可以相替而又不改变语法属性的成分属于同一句法类型。