Before making changes to the registry, you should back up any valued data on the computer.
更改注册表前,应该对计算机上任何有价值的数据进行备份。
BACK UP your DATA Why: Because photos are not the only important things on your computer.
备份数据为什么:照片可不是电脑上唯一重要的东西。
The project was saved when the computer switched to an emergency 10-minute back-up power source.
项目在计算机切换到一个可维持十分钟的紧急电源后被挽救了。
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