如果排序是私有排序，那么该参数影响代理程序私有内存。
If the sort is a private sort, then this parameter affects agent private memory.
您准备发布自己的应用程序时，必须构建一个发布模式的版本，这意味着用私有密钥签署应用程序。
When you are ready to release your application, you have to build a release mode version of it, which means signing the application with your private key.
要访问私有数据，应用程序必须首先请求用户的权限（被称之为扩展权限）。
To access private data, applications must first request the user's permissions, which are called extended permissions.
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