操作系统特性，如键盘响应、高对比度、鼠标键、声音卫士（SoundSentry），和声音显示（ShowSound）。
Operating system features, such as keyboard response, high contrast, mouse keys, SoundSentry, and ShowSounds.
例如，声音卫士显示图标和其他可视化提示来指示系统已经发出报警或其他警告。
For example, SoundSentry displays ICONS and other visual cues to indicate that the system has sounded an alarm or other warning.
中国曾为其研制过源自“天空卫士”系统的多种火控雷达。
China has produced various fire control radars derived from the SkyGuard system.
中国曾为其研制过源自“天空卫士”系统的多种火控雷达。
China has produced various fire control radars derived from the SkyGuard system.
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