It is a common DSL antipattern to make fundamental (possibly breaking) changes to core classes of the language.

对语言的核心类进行根本改变(可能是破坏)是一个常见的dsl反模式。

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Policy description language, which is one of the core parts of the policy-based security management system, is still lack of a common standard.

作为基于策略安全管理系统核心之一的安全策略描述语言，至今没有一种业界通用的标准。

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