The research of Third language acquisition (TLA) derives from the research of Second language acquisition (SLA), and focuses on the language acquisition of bilingual or multilingual learners.
三语习得研究源于二语习得研究，主要关注操作双语或多语的语言学习者的语言习得问题。
The research of Third language acquisition (TLA) derives from the research of Second language acquisition (SLA), and focuses on the language acquisition of bilingual or multilingual learners.
三语习得研究源于二语习得研究，主要关注操作双语或多语的语言学习者的语言习得问题。
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