有一点非常重要，即我们要把它视为一个完整的系统，而不只是一堆独立组件的总和。
It's extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components.
处理标签的一个重要方面是知道哪些组件有哪些状态。
An important aspect of dealing with the tag is knowing which components go with which states.
快照实际上就是基准的集合，工作区中的每个组件有一个基准。
A snapshot is really just a collection of baselines, one for each component in your workspace.
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