The Atom Syndication Format specification is silent on the matter of what the form that a term can take, so nothing stops you from creating a hierarchical structure of categories.
Atom Syndication Format规范对term可以采用何种形式并无要求,因此您完全可以自由地创建类别的层次结构。
At last, discusses the important role of action refinement in specification language's hierarchical descriptions.
最后,探讨了动作细化在规范语言层次化描述中的作用。
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