operaria职虫(膜翅目)operan.歌剧n.挪威Opera软件公司的浏览器软件operating system option操作系统选项operating-mode factor工作方式因数, 运转率operating system family操作系统系列operating system module操作系统模块operating specification操作说明书operas go into campuses戏曲进校园operating depth sailing工作深度航行operating current range工作电流范围operating hours counter工作时间计数器operating earnings rate经营资本利益率