oddity

n 1 [U] (also oddness) quality of being odd(1); strangeness 奇特; 古怪; 奇怪: I was puzzled by the oddity of her behaviour. 她行为古怪我感到莫名其妙. 2 [C] unusual act, event, person or thing 异常的行为、 事情、 人或东西: a grammatical oddity 语法上的怪异 * He's something of an oddity in the neighbourhood, ie unusual in some ways. 左邻右舍的人觉得他有些古怪.

ochre (US also ocher), Oct, oct(o)-, octagon, octagonal, octane, octane number (also `octane rating), octave, octavo, octet (also octette), October, octogenarian, octopus, ocular, oculist, odd, odd job man, odd jobs, odd-looking, oddball, oddly, oddment, oddness, odds, odds-on, ode, odious, odiousness, odium, odometer, odor, odorous, odour, odour (US odor), odourless, odyssey, OECD, oecumenical, Oedipus complex, oesophagus (also esp US esophagus),