n. 冒犯者( offender的名词复数 )，犯规者，罪犯，妨害…的人（或事物）；

[例句] The authorities often know that sex offenders will attack again when they are released.

[例句] The contraceptive pill is the worst offender, but it is not the only drug to deplete the body's vitamin levels.

v. 把（乐曲）编成管弦乐( orchestrate的现在分词 )，和谐地安排，精心策划；

[例句] The colonel was able to orchestrate a rebellion from inside an army jail.

[例句] ...a carefully orchestrated campaign.

n. 桨，橹( oar的名词复数 )，划手；v. 划（行）( oar的第三人称单数 )；

n. 渥太华（加拿大首都）；

n. 盎司( ounce的名词复数 )，少量，一点儿；

[例句] ...four ounces of sugar.

[例句] If only my father had possessed an ounce of business sense...

n. 过度拥挤，挤满，人口过密，工业过分集中；v. 使过度拥挤(overcrowd的现在分词)，把…塞得太满；

[例句] Students were protesting at overcrowding in the university hostels.

[例句] ...overcrowding and lack of facilities for patients.

v. 获得( obtain的第三人称单数 )，买到，（规则、制度、习俗等）存在，流

[例句] Evans was trying to obtain a false passport and other documents...

[例句] The perfect body has always been difficult to obtain.

n. 远足，郊游，短途旅行( outing的名词复数 )；

[例句] One evening, she made a rare outing to the local discotheque.

[例句] ...families on a Sunday afternoon outing.

v. 省略( omit的现在分词 )，遗漏，删掉，忘记做；

[例句] Omit the salt in this recipe...

[例句] Our apologies to David Pannick for omitting his name from last week's article.

n. （蒸汽，怒气等的）爆发，突发( outburst的名词复数 )；

[例句] ...an outburst of anger.

[例句] ...a spontaneous outburst of cheers and applause...

v. 部分重叠( overlap的第三人称单数 )，（物体）部份重叠，交叠，（时间上）部份重叠；

[例句] When the bag is folded flat, the bag bottom overlaps one side of the bag...

[例句] Overlap the slices carefully so there are no gaps...

n. 主动的表示，提议，（向某人做出的）友好表示、姿态或提议( overture的名词复数 )，（歌剧、芭蕾舞、音乐剧等的）序曲，前奏曲；

[例句] The programme opened with the overture to Wagner's Flying Dutchman.

[例句] He had lately begun to make clumsy yet endearing overtures of friendship...

v. 对…要价过高( overcharge的现在分词 )；

[例句] If you feel a taxi driver has overcharged you, say so...

[例句] She claims she was overcharged by £1,000.

n. 软膏( ointment的名词复数 )，扫兴的人，煞风景的事物，药膏；

[例句] A range of ointments and creams is available for the treatment of eczema...

[例句] He received ointment for his flaking skin.

n. 过高估价，定价过高；

[例句] ...a rate which does not overvalue the pound...

[例句] Many, perhaps all, Internet stocks are hugely overvalued.

n. 产量( output的名词复数 )，输出，（人、机器、机构的）产量，输出端；

[例句] Manual workers need a good breakfast for high-energy output...

[例句] Government statistics show the largest drop in industrial output for ten years.

v. 省略( omit的第三人称单数 )，遗漏，删掉，忘记做；

[例句] Omit the salt in this recipe...

[例句] Our apologies to David Pannick for omitting his name from last week's article.

n. 孤儿( orphan的名词复数 )；

[例句] I'm an orphan and pretty much grew up on my own.

[例句] ...a young orphan girl brought up by peasants...

n. 观点( outlook的名词复数 )，展望，眺望，眺望处；

[例句] The illness had a profound effect on his outlook...

[例句] I adopted a positive outlook on life...

v. 长[发展] 得超过（某物）的范围( outgrow的第三人称单数 )，长[发展]得不能再要（某物），长得比…快，生长速度超过；

[例句] She outgrew her clothes so rapidly that Patsy was always having to buy new ones.

[例句] ...outgrown baby clothes.