2. boot n.v.引导,启动(= boot up) bootable disk引导盘 boot failure引导失败 23. optical disk光碟盘l/(同 compact disk) optical drive光驱 optical fiber光纤 optical scanner光学扫描仪18 22. boot n. v. 引导，启动 ( = boot up) bootable disk 引导盘 boot failure 引导失败 23. optical disk 光碟[盘] (同 compact disk) optical drive 光驱 optical fiber 光纤 optical scanner 光学扫描仪