在PHP V5.3中引入的名称空间是为php类、常量和函数提供上下文的一种方式，从而可以将使用相同名称的元素看作是惟一的。

Namespaces - introduced in PHP V5.3 - are a way of giving your PHP classes, constants, and functions context so that elements with the same names can be understood as being unique.

youdao

review 元素附加到同名的概念中，但是它的 source 子元素附加到 customer 概念，通过这种方式可以获得一种隐含的规则，即评论来源就是客户。

The review element attaches to the concept of the same name, but its source child attaches to the customer concept, and in this way you have an implicit rule that sources of reviews are customers.

youdao

因此在集成中，创建的文档类型必须与 4 种派生形式中的其中一种同名。

Thus, in the integration, the created document type must have the same name as one of the four subforms.

youdao