O字开头的单词或词组
observationout of sighton Mondayone-pieceoverlookoffshoreout of workovertakeobedientopen one's mind toongoingout of the wayopen-endedoutdooroppressoptimaloinkoxenon boardopacityoozeoffensiveout of breathoutplayorganizeropen the door toon one's own termsounceon balanceobiorton businessoccurrenceoffenseoxytocinoverdriveorganisationourselvesout of timeout of placeopeningonset