O字开头的单词或词组
over weightoutpatienton the runoutburstouterwearoriginatororiginationorthodonticsoctagonoddballoral examinationoff-dayopt foroutshineovertookoperation manualoversimplifyonce or twiceoff-lineout of pocketosmosisO2operation managerof noteoverridingon the alertorthographicoveremphasizeorbitaloverindulgenceoff-dutyold stockone-eyedopening balanceos1overtoneoverblownocta-occidentodorlessoutsizeoppositely
