And what's more, language has six functions such as informative function, expressive function, evocative function, metalingual function, esthetic function and phatic function.
在这套系统中符号有六大功能——信息功能、表情功能、祈使功能、元语言功能、美感功能和酬应功能；
Metalingual (metalinguistic) function: the function of language that can be used to talk about language itself.
元语言功能，指语言可用来讨论语言本身的功能。
Metalingual (metalinguistic) function: the function of language that can be used to talk about language itself.
元语言功能，指语言可用来讨论语言本身的功能。
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