O字开头的单词或词组
occupantovationon lineon requestoxi-oryxomnibusorganizingoverkillofftakeodd joborange juiceon the part ofoffbeatout-of-dateoptical driveO. L.overweighon wingsodd numberon account oforthodonticoff-loadoff limitsout withoverruleoxidationorthopneaon the rocksOPECon one's own accountOne man's meat is another man's poisonoriginatingornateone and allOrmosiaointmentolfactory bulbon the flyoversoulozoneonlay
