一个虚拟机运行在一个单独的操作系统内。

A virtual machine runs inside a separate window.

youdao

需要注意的是虚拟机运行并不会像本地主机（就是运行在非虚拟的硬件上的系统）上的程序一样快。

Something to note is that a virtual machine will not be as fast as a native application (native = running on non-virtualized hardware).

youdao

如果不介意较慢的启动时间，在没有最近出现的共享内存时，服务器虚拟机运行一段时间会变快。

If you don't mind the slower startup time, without the newly available Shared memory, the server VM will run more quickly over time.

youdao