More generally: of or relating to operation or operations; (Military) engaged in or connected with active (military) operations, as distinct from…
Used as the first element of a code name for a campaign (originally a military campaign). Now often humorous.
英语词典包含1132095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。