在你的计算机上，有20-30个进程在后台运行着。有的占用了太多的系统资源，造成机器运行缓慢。更为不幸的是，一些进程是间谍软件和木马，如此你的隐私和机器的控制权会被黑客所掌控。本书提供了大多数常见的进程知识。

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On your computer, there are 20-30 processes running in the background. Some take up too many system resources, causing the machine to run slowly. More unfortunate is that some process is spyware and Trojans, so your privacy and control over the machine will be controlled by hackers. This book provides the most common process knowledge.