covert operation

英 美
  • 秘密行动
  • covert adj.隐蔽的;偷偷摸摸的;隐密的n.掩蔽物;树丛;覆羽
  • operation n.操作;运转;经营;行动;手术;运算;生效;(复)运筹学
Noun:
  1. an intelligence operation so planned as to permit plausible denial by the sponsor