Not only some file classes or so, but something I call a Virtual file system (VFS), my own file system that supports nice features like compression, encryption, fast access times, and so on.

我将其称作为虚拟文件系统(VFS)，它不仅仅只是一些文件(操作)的类，我自己的文件系统将会支持诸如数据压缩，加密，快速存取等等一系列漂亮的特性。

youdao

A method call which looks innocuous on the surface, for example, may access the file system at some point during its execution.

例如，表面上看似无害的方法调用可能会在其执行过程中的某一点访问文件系统。

youdao