下面这段话中的high government sources是什麽意思?

问题描述:

下面这段话中的high government sources是什麽意思?
In addition to being required by their professional code of ethic to protect the confidentiality of “high government sources,” reporters typically must offer such protection in order to be assured of receiving future news stories.

句意:
除了他们职业道德所要求的为高级官方消息保密之外,为了能够确保未来还有采访新事件的机会,记者们也一般一定会注意保密.
offer such protection 指的是保密
government sources一般意思是“官方消息”,前面家high,我想是为了加强语气!