如果出现这种情况，找到你的旧版安装文件-如果你已经删除了，从VirtualBox old builds page重新下载。
If this occurs, find your old installer - if you have deleted it, download it again from the VirtualBox old builds page.
Stow将只除去指向应用程序安装的链接，决不会删除任何安装文件。
Stow will simply remove the links pointing to the application installation and never delete any installation files.
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