Opytnoye Konstruktorskoye Byuro (Russian: Experimental Design Bureau)Opytnoye Konstruktorskoye Byuro(俄罗斯:实验设计局) OKbridge (online bridge club)OKbridge(在线桥) OK Bye好的再见 Old Kent Bank (Grand Rapids, Michigan)老肯特银行(密歇根州的大急流城) Online Knowledge Base在线知识库 Outrigger Kauai Beach Hotel & Conference Center酒店及会议木考艾岛的中心 Orchid Beach, Queensland, Australia兰海滩,澳洲昆士兰省 Offener Kanal Berlin ( Open Channel Berlin)柏林(Offener Kanal明渠柏林)