A grammar rule, however true (it is), is useless unless it can be understood.

一条语法规则，不管如何正确，除非能懂，否则毫无用处。

youdao

A grammar rule, however true (it is), is useless unless it can be understood.

一条语法规则，不管如何正确，除非能懂，否则毫无用处。

youdao