openadj.开着的;开放的;公开的v.打开;张开;展开;摊开;开始(某事物);开张;营业;以…开头;宣布启用n.户外;公开
opev.开放;自由进出(动词open的古体)=open.
opecode操作码
OPEC plans欧佩克计划
OPEC output欧佩克产量
OPEC meeting欧佩克会议
OPEC oil cartel欧佩克石油联合企业
OPEC's Petrol Power Seeps Away=Institute of Measurement and Control 测量与控制学会[英]
OPEC wants to monopolize oil.石油输出国家打算垄断石油。
OPEC Agreement on Production Levels石油输出国组织协调生产协议