O字开头的单词或词组
old stockovertoneoathsodorlessoccludeOPD.outmodedovercoatoutpostoral examinationorthographicoscon the fenceopinionatedone-stepone-eyedouter spaceovercrowdoversawovertime workon the alertoileronrushOTDoverstayontologyomnivorousoutspeakoil paintone nightox.obstructingoutrideoaston the joboomphoverindulgenceorganiseropening balanceon trialoncomingoverdress
