as a consequence, l2 acquirers begin to possess unique characteristics, which are quite beyond monolinguals, in the l2 ( the interlanguage ) system, the native language system, the l2 uses, and the mentality 这样,二语习得者在二语(过渡语)系统、母语系统、二语应用和认知思维方面便拥有了操单语者所不可企及的特质。
native language system meaning:[Computer] (NLS) A set of interfaces specified by X/Open for developing applications to run in different natural language environments.