Scheme 全面地为程序员提供了程序的大部分基本功能模块，并允许程序员以独特并且与众不同的方式来 组合使用它们。

Scheme generally provides the programmer the most basic building blocks of programs and allows programmers to combine them in unique and unusual ways.

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而且，FreeBSD 5已经添加了一个灵活的mac框架(来自TrustedBSD项目)，包括一个具有类似SELinux基本功能的模块。

And FreeBSD 5 has added a flexible MAC framework (from the TrustedBSD project), including a module with functionality essentially like SELinux's.

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ASON的基本功能模块包括三个部分：路由、信令和链路管理。

According to its functions, ASON is departed into three basic modules: routing, signaling and link management.

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