试题题干
Fill in each of the following blanks with a word or an expression.
Specifically, 
consists of a series of interlocking and approximate linguistic systems in between and yet distinct from the learner's native and target languages.
参考答案
试题解析
具体地说，中介语是由一系列联锁和近似的语言系统组成，介于学习者的本土语言和目标语言之间，但不同于学习者的本土语言和目标语言。