有这么多的语法和正字法错误。

There are so many grammatical and orthographic mistakes on it.

正字法是指一种语言的书写和拼写系统。

The orthography is the written system and spelling of a language.

当他们看到单词时，某种正字法在脑中呈现。

They see the word and there's some kind of an orthographic representation.