The SLA research concerning the fossilization in interlanguage is mainly based on the SLA environment and focuses on the non-target language forms concerning linguistic structure.
二语习得理论研究的中介语化石化现象主要局限在狭义的二语教学环境内，其侧重点为语言结构的非目的语形式。
Interlanguage fossilization is recognized as a widespread phenomenon in second language acquisition.
中介语僵化是第二语言习得中的一个普遍现象。
Interlanguage and its fossilization is a hot topic in SLA research and FLT research.
中介语及其石化现象是二语习得研究和外语教学研究中的一个热点。
Fossilization of interlanguage is a common phenomenon in the learning of second language.
中介语石化是二语习得中的一个普遍现象。
As an important concept in SLA, interlanguage fossilization is an inevitable phenomenon in the process of foreign language learning.
中介语石化作为二语习得的重要概念，是外语学习过程中不可避免的现象。
As an important concept in SLA, interlanguage fossilization is an inevitable phenomenon in the process of foreign language learning.
中介语石化作为二语习得的重要概念，是外语学习过程中不可避免的现象。
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