在这个示例中，所有的系统都没有安装相同的字体。
In this example, all the systems do not have the same fonts installed.
最重要的是，如果病毒被清除您所有的文件，即使你没有失去任何重要的是，您将不得不花费大量的时间，重新安装系统和所有的程式。
On top of that, if a virus were to erase all of your files, even if you did not lose anything important, you would have to spend a great deal of time reinstalling your system and all of your programs.
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