Safety knowledge
安全───security;知识───knowledge
The gang tied up a security guard.───那群歹徒把一名保安人员捆绑起来。
He was upgraded to security guard.───他被提升为保安。
She hasn't been cleared by security.───她尚未获保安部门批准做机要工作。
Nationalist elements from the military, the security establishment and the seedier side of the business world would sweat it out together.───民族主义者有的来自军队和安全组织，也有的是一些工商界的落魄分子。他们聚在一起，不安地观望事态的发展。
"Our armed forces will always be a cornerstone of our security, but they must be complemented, " he said.───我们的军队是国家安全的基石，但是它们必须能够承担这一使命。
He said the agreement demonstrates the nations' shared commitment to ensuring global peace and security.───他说，这项协议展示了两国确保全球和平与安全的共同承诺。
The building needs improved security and lighting.
The UN security council may impose economic sanctions .
Security forces were given sweeping powers to search homes.
Management need to explore ways of improving office security.
Danger is next neighbour to security.