It consists of a foundation comprising shared concepts such as classes and associations , on top of which is a collection of vertical sub - languages or 一些像类和关联这样的共享概念组成了它的基础部分，顶部是垂直的子语言或
The restricted , domain - specific sub - language requires less programming , not the visual or textual nature of the tool 实际上是这种有限的、领域特有的子语言需要的编程工作量更少，而不是工具的可视化或文本特性可以减少编程的工作量。
You can program declaratively , using domain - specific sub - languages , but still revert to your full - featured programming language if the sub - language does not meet your needs fully 可以使用领域特有的子语言进行声明式编程，如果这种子语言不能完全满足需要，那么仍然能够转回特性全面的编程语言。
The lang function returns true or false depending on whether the language of the context node as specified by xml : lang attributes is the same as or is a sublanguage of the language specified by the argument string 函数lang根据节点的语言属性是否和参数字符串中指定的语言一致，或者是否属于指定语言的子语言而返回真或假。
Now that we ve established that it is the domain - specific sub - language that reduced the amount of programming involved , not necessarily the graphical nature , can we ever reach a point where programming is done completely by domain experts 既然我们已经确定减少了所涉及的编程工作量的是领域特有的子语言，而不是图形特性，那么我们可以达到编程全部由领域专家来完成的程度呢？
