security
安───security
He was upgraded to security guard.───他被提升为保安。
The gang tied up a security guard.───那群歹徒把一名保安人员捆绑起来。
She hasn't been cleared by security.───她尚未获保安部门批准做机要工作。
They have the security of a good home.
They were summarily ejected by the security guard.
They hold together for collective security.
Danger is next neighbour to security.
Management need to explore ways of improving office security.