FS (Formulaic Sequences) are widespread in language and have a variety of usages and functions, and therefore play an important role in second language acquisition and language teaching.
语块广泛存在于语言中，并有着丰富的用法和功能，因此对第二语言习得和语言教学有重要意义。
This paper probes into several issues in the field of formulaic language study by presenting the present situation of research and a variety of terms and definitions.
本文从第二语言习得中的程式语研究现状、术语和定义入手，对该领域的几个问题进行了探讨。
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