中介语石化是二语习得的常见现象，也是外语习得理论研究的热门话题之一。
Fossilization is a common phenomenon in second language acquisition (SLA), which is also the hot issue in foreign language theoretical research.
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。
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.
中介语石化是二语习得中的一个普遍现象。
Fossilization of interlanguage is a common phenomenon in the learning of second language.
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