O字開頭的單詞或詞組
oafon no accountomegaoutfitonce againoptimizationof oneselfovenoccupationorganiseon the groundout of itoperativeout ofoughtoverseasoversizeover and over againoverlayOctoberover thereoaroddson one's ownoriginalityoccasionalother thanon the sceneoptorphanon the sideobsessiveoverlordoutsideroverviewoctopusorientotherownershiponlineorchestraon occasion