If the same annotation declaration appears for multiple program elements, however, it can lead to unnecessary clutter.

如果多个程序元素有同样的注释声明，那么就会产生不必要的混乱。

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Moreover, the capability declaration notes security policy so that multiple services can participate in a secure transaction communication.

此外，功能声明说明了安全策略，以便多种服务可以参与安全事务通信。

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Note: Namespaces declaration is a must when the incoming document contains multiple namespaces and prefixes.

注：如果输入文档包含多个名称空间和前缀，则名称空间声明是必需的。

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