1The group was considered to be a risk to national security.
这伙人被认为是威胁国家安全的危险分子。
2Financial security was high on his list of priorities.
在他的心目中，金融安全是十分重要的一环。
3You may not enter the security area without authorization.
未经批准不得进入警戒地区。
4Let's look at the question of security.
咱们来看一下保安问题。
5The President doesn't need a primer on national security.
总统对于国家安全是不需要读入门书的。