O字開頭的單詞或詞組
off-lineodorlessouterwearone dayOLEoathsosmosisobject-orientedon the joborthographicouter spaceoxy-obstructingoastOv.occludeoropharynxomniscientoverflyout of tuneoperating roomorbitalopiateofferoroutspeakopenlyopen an accountodd jobson the fireon the beatostracismOEMoratoryof noteoffer sheetoverall gainO. D.offer a rewardoseonce too oftenopen interestoligopoly
