The storage retains the arbitrary tree form of the document.
这种存储方式保存文档的任意树形式。
The parsing stage creates arbitrary tree structures on the basis of token lists.
解析阶段在记号列表的基础上创建任意的树结构。
Page acts as an abstract base class for all pages and can contain any arbitrary tree of Components.
Page 充当所有页面的抽象基类并可包含 Component 的任意树。