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问题:

Second language acquisition

答案:

Second language acquisition (SLA) is a general term which refers to the acquisition of a second language (L2), in contrast with first language acqui¬sition (FLA). SLA is also used as a general term to refer to the acquisition of a foreign or subsequent language (such as a third or fourth language). Thus, SLA is primarily the study of how learners acquire or learn an addi¬tional language after they have acquired their first language (LI).