相關單詞同義詞either, ossia, 近義詞 else 其他, conversely 相反地, otherwise 否則, optionally 可選擇地, alternatively 二者擇一地, contrarily 反之, operating theater 手術室, operating room 手術室, Beaver State 河貍州(俄勒岡州的別名)..., surgery 外科手術, operating theatre 手術室, Oregon 俄勒岡（美國州名）...反義詞nor, 也不臨近詞oracle, opus, orf, ory, ork, ORV, Ora, Orm, ORP, orz, orlo, Oric相似詞optional, optometrist, opulent, opus, or die in the attempt idiom, or else idiom, or no idiom, or otherwise idiom, 返回 or