black op
Military (originally and chiefly US )
noun
(Frequently in plural) a secret or covert operation, especially one conducted outside ordinary channels of command and accountability; also in extended use.
Origin
1980s.
| 单词 | black op |
| 释义 | black opMilitary (originally and chiefly US ) noun (Frequently in plural) a secret or covert operation, especially one conducted outside ordinary channels of command and accountability; also in extended use. Origin |
| 随便看 |
英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。