chain of command

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It has no clear structure or evident chain of command.
因为它没有明确的组织或明显的指挥系统。
Despite its fierce campaign of violence, the group has an undefined structure and no clear chain of command.
尽管博科海姆发动了极其暴力的运动，但该组织并没有明显的体系结构和指挥系统。
That raises the possibility, at least, that secret data may have been captured by the keylogger, and then transmitted over the public internet to someone outside the military chain of command.
这至少增加了这样的可能，即机密数据可能被键盘记录器捕获，然后通过公共互联网被传输给军事指挥系统之外的人。
blog.sina.com.cn

They came to light through the chain of command in Iraq on January 13.
CENTERFORSECURITYPOLICY: Get a grip
The big idea that bubbled up through the chain of command was a long-haul counter-insurgency campaign.
ECONOMIST: Lexington
But congressional inquiries into the affair are looking higher up the chain of command.
ECONOMIST: Scrambling to control the damage

the way that people with authority in an organization, especially in the military, are ranked, from the person with the most authority to the next one below, and so on