病毒可以修改注册表键值、注入系统核心文件中，并且避开卸载软件。

A virus can change registry keys, attach itself to core system files, and evade uninstaller programs.

youdao

并非所有的发行版都使用相同的系统核心文件，而是他们已经测试了可以和包里最多软件一块儿工作。

Not all distributions will use the same versions of core system files either, rather the ones they've tested and are most likely to work with the other programs in the package.

youdao

这组接口的核心就是虚拟文件系统交换器(VFS)。

At the core of that set of interfaces is the virtual file system switch (VFS).

youdao