其概念是非常简单的：通过使用整个软件栈(操作系统、应用、配置数据等等)的虚拟映像来避免安装与配置上的冲突。

The concept is simple: avoid all installation and configuration hassles by using a virtual image of an entire software stack: operating system, application (s), configuration data, etc.

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与设备类似，应用程序和所有先决中间件和操作系统软件都是预安装和预配置的。

Like an appliance, the application and all prerequisite middleware and operating system software is all pre-installed and configured.

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删除或安装应用程序(不是必须与可执行文件一一对应)只需要解包或删除文件系统树中的分支。

Deleting or installing applications (which is not necessarily one-to-one with executables) is just a matter of unpacking or deleting branches to the file system tree.

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