Basically, he means that the order in which learners acquire syntactic rules is the same in both languages.

基本上，他的意思是学习者获得句法规则的顺序在两种语言中是相同的。

youdao

Human beings like to think of themselves as possessing unique capabilities such as being able to use tools, employ a language with syntactic rules and process complex mathematical equations.

人类总是觉得他们具备一些独特的能力，诸如能够使用工具、采用一种具有语法规则的语言和处理复杂的数学方程序。

youdao

The paper is about the syntactic rules of topic-chain.

本文研究现代汉语静态话题链的语法组织规律。

youdao

And one of the puzzles of syntactic rules, or one of the issues of them, is that different rules can conspire to create the same sentence.

语法规则的一个谜团或问题是,不同规则可以共同作用来产生同一个句子

耶鲁公开课 - 心理学导论课程节选

Now, the syntactic rules are complicated.

语法规则是复杂的

耶鲁公开课 - 心理学导论课程节选