Enough virtual user licenses to be able to place as close to a production load as possible to each logical instance of the operating system.

能够在操作系统的每个逻辑实例中提供足够的虚拟用户许可证，以提供与生产负载类似的负载。

youdao

The user has to arrange the phone so a virtual “error box” is situated around his or her eye; the system can recognize the eye as long as it stays in this box.

用户需要把手机放在他或她的眼睛周围一个虚拟的“容错框”允许的范围内；只要眼睛在这个范围里，系统就能识别到眼球。

youdao

The TAP driver allows the guest operating system to read or write raw Ethernet frames to a virtual Ethernet device (extended to user space).

TAP驱动程序使访客操作系统能够将原始以太网帧写到一个虚拟以太网设备(用户空间的扩展)。

youdao