Google's Android is an open source operating system.
谷歌的Android系统是个开源操作系统。
Subversion: This longstanding open source version control system is available for nearly every operating system.
Subversion：这个历史很长的开放源码版本控制系统适用于几乎所有操作系统。
Debian is a computer operating system composed entirely of free and open source software.
Debian是一套计算机操作系统完全的自由和开放源码软件。
Debian is a computer operating system composed entirely of free and open source software.
Debian是一套计算机操作系统完全的自由和开放源码软件。
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