Even just a period of a year's difference in teaching is critical in these early years of accelerated learning.

在学习速度最快的头几年里，教育上即使一段时间的差异都非常关键。

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Whether "the critical period of language learning" affects the second language learning is a controversial topic in SLA research field.

“语言学习关键期”是否对第二语言的习得产生影响，一直是第二语言习得研究领域争论不休的话题。

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Primary school education is the beginning of elementary education, which is the critical period for language learning.

小学是基础教育的起始阶段，也是系统学习英语语言的关键期。

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