To make the actual operation easier, several user space applications have been created.

为了简化实际的操作，创建了一些用户空间应用程序。

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The Rx library is suitably designed to be used in kernel as well as user space applications with similar API interfaces.

rx库很适合用于内核内，还适用于具有类似API接口的用户空间应用程序。

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Within guest mode are the standard two modes, so that a guest operating system runs in guest mode but supports the standard kernel and user modes for its kernel and user-space applications.

在客户模式中有两种标准模式，因此客户操作系统在客户模式中运行可以支持标准的内核，而在用户模式下运行则支持自己的内核和用户空间应用程序。

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The flaw, which affected the virtual machine monitor (VMM) in Virtual PC, could enable an attacker to use applications running in user-space on a guest OS to access portions of the Virtual PC memory that should be inaccessible to those applications.

FORBES: How Bad Assumptions Are Making Software Less Secure