本文只是一个入门级读物，旨在让您体验了在Scheme等面向列表的语言中列表处理是何等简单。
This article has been just a primer to provide a taste of how easy list manipulation is in list-oriented languages like Scheme.
比如能够对 “我的服务已关闭”或者“我没有收到包裹”等类似简单的评论进行恢复的自然语言引擎就很受期待。
Expect to see a certain percentage of responses handled by natural language engines that can respond to basic commentary such as "my service is down" or "I never received my package."
为了使此功能保持简单，没有使用诸如工具命令语言(Tool Command Language, Tcl)等现有的扩展语言。
An existing extension language, such as Tool Command language (Tcl), was avoided to keep this capability uncomplicated.
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