The virtual stack -- like a real stack -- is a last in-first out (LIFO) data structure that temporarily stores function arguments and function results.

虚拟堆栈与实际堆栈类似，是一种后进先出（LIFO）的数据结构，可以用来临时存储函数参数和函数结果。

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Each virtual image is specified with a software stack object.

每个虚拟映像都使用软件堆栈对象指定。

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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.

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。

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He suggests an idea of "virtual towing" where an idle car could pick up on another vehicle and follow it back to a stack, using inter-car tracking software.

CNN: Reinventing the wheel