该方法是一种根据聚类结果确定学习顺序的方法。
Instances show that this kind of algorithm is deterministic learning algorithm.
所以，即使正常的顺序是听，说，读，然后写。但是对于大多数的学生的学习顺序还是读，听，说，然后写。
So even though the natural order is listening, speaking, reading, then writing, the order for most students is reading, listening, speaking, then writing.
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。
Basically, he means that the order in which learners acquire syntactic rules is the same in both languages.
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