大部分时间，安装测试都在一个新安装的操作环境中执行。
Most of the time, the installation tests are executed in a freshly installed operating environment.
举例来说，当处理一个离散的划分时，您就不能在没有核对和修改需要该操作来更新的每一个其他划分的情况下执行一个重命名操作。
When working with a discrete partition, for instance, you can't perform a rename refactoring without being able to check out and modify every other partition that needs to be updated by the action.
在您执行存储库操作，载入模型，或者在源代码控制下工作时，打开更大项目的一部分时会更快。
It is faster to open a portion of a larger project when you perform repository operations, load a model, or work under source control.
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