O字开头的单词或词组
overeatoverrateobligingonlookerohmicoutside looporthogonaloutnumberout of the worldoffer priceousteroverkilloutput poweroverallson the telephoneout of dangeroxidationogiveon tapob-orange juiceOEMordealon the shelfon the increaseO-levelon the edge oforyxoccupantor somethingoximeterorioleoddlyoff-trackophthalm-outward-boundoboeomnibusone dayorder fromorderingoff season
