The relationship between language and writing has long been a seemingly simple yet complicated theoretical issue.
长期以来，语言和文字的关系一直是一个看似简单却很复杂的理论问题。
The relationship between writing and speaking has become a keen issue in second language pedagogy and research.
写与说的关系，一直是语言教学与研究普遍关注的问题。
The relationship between writing and speaking has become a keen issue in second language pedagogy and research.
写与说的关系，一直是语言教学与研究普遍关注的问题。
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