O字开头的单词或词组
one-upolefinon one's way homeoddlyoverdraftophthalmologyout of habitoverageoverdueon the houseon the moveorthopedicsoriginal characterobscurityobviateoutboundoverstateonerousoutbackon leaveorienteeringorganizationalopen seaopen one's eyes toovershadoworificeown tooversightorthogonalomnivoreocelotoctaneoxidativeordealon one's toesoff-keyolfactoryoutcryOEMorange juiceobfuscateout-of-pocket
