1·If neither the filter nor the comparator are specified, the enumeration will traverse all records in the record store in an undefined order.
如果既没有指定过滤器又没有指定比较器，枚举将以未定义的顺序遍历记录存储中的所有记录。
2·In some cases, we may actually want to traverse these nodes in the reverse order, skip certain nodes or subtrees, or something else.
在某些情况下，我们实际可能希望按照相反的顺序遍历这些节点、跳过某些节点或子树或其他一些内容。
3·Execute and traverse permission to the content administration page.
针对内容管理页面的执行和遍历权限。
4·In addition to selecting nodes, you often need to traverse the structure of a document, either to find related data or to perform complex manipulations.
除了选择节点之外，通常还需要遍历文档结构，以便找到相关的数据或者执行复杂的操作。
5·You can traverse much more complex data structures in the same way.
用同样的方式也可以遍历非常复杂的数据结构。