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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Modern business process engines usually provide capabilities for evaluating simple rules, either built in the business process language or by invocation of general purpose languages.

现代的业务流程引擎一般提供评估简单规则的功能，构建在业务流程语言中，或者通过调用通用的语言。

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There is a minor but socially significant side-effect to this tight beam approach: it means that little attention is left for social rules, language, and how human beings relate.

这个办法也有一个不大的但是从社会角度而言却是不可忽视的副作用：它意味着这些人对社交规则、语言交流、和人际关系无暇顾及。

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Desktop speech-recognition accuracy was less than stellar, mostly because software developers had to rely on linguistic rules that were no match for natural language rules with countless exceptions and cope with an infinite variation of accents.

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Linguistic-knowledge translators have two sets of grammatical rules one for the source language and one for the target.

ECONOMIST: A gift of tongues

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

BBC: Dublin's underground literary scene