A software emulator is not running your program on a virtual machine — it's running it on the fly without a virtual machine.

软件模拟器不在某台虚拟机上运行您的应用程序——它不通过虚拟机，而是实时地去运行它。

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A computer software program that installs itself without a user's permission and does not or honestly tell the user what information it is gathering from the computer and how it is using it.

计算机软件程序，安装许可本身不带用户的，不或诚实地告诉用户是什么样的信息收集从电脑和它是如何使用它。

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Backdoor is a software program that gives an attacker unauthorized access to a machine and the means for remotely controlling the machine without the user's knowledge.

后门是一个软件程序，使黑客未经授权访问的机器和手段，远程控制的机器在用户不知道。

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That makes it especially insidious, as users can infect their computer with software that gives hackers remote access to their desktops without downloading an e-mail attachment or running a program.

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