Shuttleworth先生表示，Ubuntu是完整的软件集，从操作系统到应用程序和编程工具，每六个月更新一次，全部免费。

Ubuntu is a complete bundle of software, from operating system to applications and programming tools, that is updated every six months and, says Mr Shuttleworth, will always be free.

youdao

如果没有先使用AIXPert实现规则集，工具就无法检查系统的安全性。

If you haven't implemented that set of rules first using AIXPert, the tool can't check the security of your system.

youdao

它使用作为Debian系统的一部分的apt - get工具集。

It USES the apt-get tool set that is part of the Debian system.

youdao