纯粹的函数性语言不依赖保存或检索状态的操作，因此不允许破坏性赋值。

Pure functional languages do not rely on operations that save or retrieve state and do not allow destructive assignments.

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BPEL是一种纯粹的技术语言，用于构建BPEL语言的语义与定义业务流程情况下的语义并不匹配。

BPEL is a pure technical language, the semantic used to construct the BPEL language doesn't match with the semantic needed to define Business Processes situations.

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Ruby是一种纯粹的面向对象编程语言，它具有非常简洁的语法，使编程更加优雅和有趣。

Ruby is a pure object-oriented programming language with a super clean syntax that makes programming elegant and fun.

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