基于XML的系统定义文件不用于描述应用程序，主要用于内部表示。

XML-based system definition files is not used for describing application, but it is used mostly for internal representation.

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我们为容器不能访问的主机的私有数据定义一个新标签host；并且将这个标签应用到container_setup . sh脚本中的cgroups文件系统。

We define a new label host for host-private data which containers should not be able to access; we assign this to the cgroups filesystem in the container_setup.sh script.

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数据源可以是关系数据库、文件系统、Web服务，甚或一系列业务应用程序中包含的自定义数据源。

A data source could be a relational database, a file, a Web Service or even a custom data source included within a line of business application.

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