Prescriptive: a kind of linguistic study in which things are prescribed how ought to be, i. e. laying down rules for language use.

规定式：一种规定事情应该是怎样的语言学研究方法。例如，规定语言使用的规则。

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Between stories the audience splits into small teams for absurdist language games with obscure rules where cheating, ad libbing and quarrelling are actively encouraged.

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But according to my sources familiar with collegiate compliance statutes, these forms do not contain any language that hold a student-athlete financially liable for violating NCAA rules.

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Brown based the grammar for his ten-thousand-word language, called Loglan, on the rules of formal predicate logic used by analytical philosophers.

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