不论是在选修课还是必修课，老师都要求学生掌握基本的知识，或是学习一些他们感兴趣的知识。
In compulsory courses orselective courses, students are required to acquire basic knowledge or want to learn whatinterests them.
在开始之前，应该掌握一些在命令行下工作的基本知识。
Before we begin, you should have a basic idea of working at the command line.
现在，您已经掌握了处理UNIX网络性能问题的基本知识和技术。
You are now armed with some knowledge and techniques to deal with UNIX network performance.
应用推荐