重点讲解：
1. be focused on 集中(注意力)；关注；
Since this is a technical article, we are focused on technical solutions to securing systems.
由于这是一篇技术性的文章，因此我们重点讨论保护系统的技术解决方案。
2. put in order 整齐；井然有序；
Things have to be put in order here before they come.
在他们来之前，这一切都得要整理好。
3. in addition to 另外；加之；除…之外；
Witnesses said the shooting focus on the back of the building, in addition to shot noise, at least two explosions heard a loud bang.
目击者说，枪击集中在大楼的后面，除了枪击声，至少还听到了两次爆炸的巨响。
4. show up 出现；露面；
You didn't show up in the morning meeting. What's up?
你没有参加今天早上的会议。你怎么了？