O字開頭的單詞或詞組
oil sealoriginal copyomniscientovertoneobject-orientedoratoryout of syncoodlesoathsovercrowdoropharynxoastouter spaceowletoccludeOEMopen-endout of questionoutspeakone-timeOv.outerwearoff the rackobstructingO. D.opinionatedopiateoutmodedonce too oftenopenlyoverfillopen interestoverridingoftentimesonenessostracismon the beatofferorout of tuneof noteoverstayoligopoly
