isolated zero node 孤零节点
This means that any isolated node releases resources it would otherwise own.
这指的是任何单独的节点将释放它所拥有的资源。
Even if you retrieved the complete document from the database, you can still use sub-document updates to update isolated node values in the source document.
即使从数据库中获取了完整的文档,仍然可以使用子文档更新更新源文档中单独的节点值。
Then, the attributes of each node named "style" are isolated using the partial predicate @style.
然后使用谓词 @style 取出每个节点的 “style” 属性。
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