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obedience [əˈbi:dɪəns] .....................CET6 考研
名 服从，遵从
参考句型 isn't (don't / can't / won't...)+sb...?
▶Love makes obedience easy. Don't you think so?
爱情使顺从变得容易，你不这样认为吗？
o·be·di·ent [əˈbi:dɪənt] .........................CET6 考研 IELTS GRE
形 服从的
参考句型 it is obvious / clear that...
▶It is quite obvious that every citizen shall be obedient to the law.
很显然每个公民都应当遵守法律。
ob·jec·tion [əbˈdʒekʃn] ..........................CET4 CET6 考研 TOEFL IELTS GRE
名 反对
参考句型 there+be 动词+(not)...
▶There is no objection to your opening the window.
你开窗并没有什么不可以的。
ob·jec·tive [əbˈdʒektɪv] ..........................CET4 CET6 考研 TOEFL IELTS GRE
形 实体的；客观的
名 目标
同 neutral 中立的
同 goal 目标
参考句型 why not...?
▶形 Why not try to be more objective about it?
为什么不尽量客观地对待此事呢？
▶名 Why not insist on carrying out your objective?
为何不坚持实现自己的目标呢？
ob·serv·ation [ˌɒbzəˈveɪʃn] .........................CET4 CET6 考研
名 观察力
参考句型 what do you think of / about...?
▶Observation is the best teacher; what do you think of it?
观察是最好的老师，你觉得呢？
ob·sta·cle [ˈɒbstəkl] ....................CET4 CET6 考研 TOEFL IELTS GRE
名 障碍物；妨碍
参考句型 isn't (don't / can't / won't...)+sb...?
▶Lack of education is an obstacle of success; don't you think so?
缺乏教育是成功的障碍，你不这样认为吗？
ob·tain [əbˈteɪn] ..........................CET4 CET6 考研 TOEFL IELTS
动 获得
参考句型 it is no wonder that...
▶She didn't study hard lately. It is no wonder that she failed to obtain a scholarship．她最近很不用功，难怪没有获得奖学金。
oc·ca·sion·al [əˈkeɪʒənl] .................CET4 CET6 考研 TOEFL IELTS
形 临时的；偶尔的
参考句型 how about / what about...?
▶I enjoy an occasional night out at the theater; what about you?
我偶尔晚上会出去看戏，你呢？
oc·cu·pa·tion [ˌɒkjʊˈpeɪʃn] ................CET4 CET6 考研 TOEFL GRE
名 职业
参考句型 will / would you (please)...?
▶Would you please state your name, age and occupation?
请说明您的姓名、年龄和职业好吗？
oc·cu·py [ˈɒkjʊpaɪ] ...................CET4 CET6 考研 TOEFL IELTS
动 占有；花费（时间）
参考句型 (not)+...+enough+(...)+to do sth
▶This simple action is enough to occupy your surface mind.
这个简单的动作足以占据你的表层意识。
of·fend [əˈfend] ..................CET4 CET6 考研 IELTS GRE
动 使不愉快；使愤怒；冒犯
参考句型 I don't think / suppose / believe that...
▶I don't think that he is a wise man, because a wise man tries not to offend people．我觉得他并不是明智的人，因为明智的人会尽量不得罪人。
of·fense [əˈfens] ............................CET4 CET6 考研 IELTS GRE
名 冒犯；进攻
参考句型 what do you think of / about...?
▶Offense is the best defense; what do you think of that?
进攻是最好的防御，你觉得呢？
of·fen·sive [əˈfensɪv]..........................CET6 考研 TOEFL GRE
形 令人不快的；冒犯的
参考句型 it+be动词+adj.+of/for sb+to+v....
▶It's difficult for you to explain your use of such offensive language.
你使用这样无礼的语言真是太说不过去了。
op·er·a [ˈɒpərə] ........................CET4 CET6 考研 TOEFL
名 歌剧
参考句型 would you like...?
▶We are planning to go to the opera this Sunday; would you like to go with us?
我们计划这个星期天去看歌剧表演，你想不想跟我们一起去呢？
op·er·a·tion [ˌɒpəˈreɪʃn] ..................CET4 CET6 考研
名 作用；操作；手术
参考句型 it is obvious / clear that...
▶It is clear that the operation of a railroad needs many men.
显然铁路的营运需要很多人。
op·pose [əˈpəʊz] ..........................CET4 CET6 考研 IELTS GRE
动 和……起冲突；反对
反 agree 同意
参考句型 it is no wonder that...
▶It is no wonder that he strongly（强烈地）opposed the plan.
难怪他强烈反对这一计划。
o·ral [ˈɔ:rəl] .......................CET4 CET6 考研 TOEFL
名 口试
形 口述的
参考句型 not both / all / every...
▶名 Not everyone is able to pass the orals without striking a blowing.
不是每个人都能毫不费力地通过口试。
▶形 Not every student has good written and oral English skills.
不是每个学生都有良好的英语写作及口语能力。
orbit [ˈɔ:bɪt] ........................CET4 CET6 考研 TOEFL IELTS
名 轨道
参考句型 there+be 动词+(not)...
▶In recent years, there are a number of communications satellites having been put into orbit.
近年来，有很多通讯卫星被送上了轨道。
or·ches·tra [ˈɔ:kɪstrə] ................CET4 CET6 考研 TOEFL IELTS GRE
名 管弦乐队
参考句型 not both / all / every...
▶Not all people know that the orchestra was established under the patronage（赞助）of the government.
不是所有人都知道这个管弦乐队是在政府赞助下成立的。
or·gan·ic [ɔ:ˈgænɪk] ................CET4 CET6 考研 TOEFL
形 器官的；有机的
参考句型 why not...?
▶Why not buy organic foods when possible? It's good for your health.
可能的时候为什么不购买有机食品呢？它对你的健康有益。
oth·er·wise [ˈʌðəwaɪz] ..................... CET4 CET6 考研 IELTS
副 否则，要不然
参考句型 or / otherwise...
▶I'm not myself these days; otherwise I would do it myself.
我最近不太舒服，否则这件事我就亲自去做了。
out·come [ˈaʊtkʌm] ................CET4 CET6 考研 TOEFL IELTS
名 结果；成果
同 result 结果
参考句型 there+be 动词+(not)...
▶I think there can be but one outcome to this affair.
我认为这件事只可能有一种结局。
out·stand·ing [aʊtˈstændɪŋ] ......................CET4 CET6 考研 TOEFL
形 著名的；杰出的
参考句型 it is no wonder that...
▶He has been writing for more than 10 years; it is no wonder that he became one of the most outstanding writers at that time.
他从事写作已经长达十年之久，难怪他成为当时最杰出的作家之一。
o·val [ˈəʊvl] .....................CET6 考研 TOEFL IELTS
名 椭圆形
形 椭圆形的
参考句型 it is obvious / clear that...
▶名 It is obvious that she prefered the cake in shape of an oval.
显然她更喜欢椭圆形的蛋糕。
▶形 It is obvious that she has a lovely oval face.
显然她长着一张可爱的椭圆脸。
o·ver·come [ˌəʊvəˈkʌm] .................... CET4 CET6 考研 IELTS
动 击败；克服
动词变化 overcome, overcame, overcome
参考句型 there+be 动词+(not)...
▶There will be no difficulty in the world that they cannot overcome.
世界上将没有任何困难是他们无法克服的。
o·ver·look [ˌəʊvəˈlʊk] ........................... CET4 CET6 考研 TOEFL IELTS GRE
动 俯瞰；忽略；宽容
参考句型 it is+the+序数词+time+that 从句
▶It is the first time that I overlook your late arrival; it won't happen again.
这是我第一次容忍你迟到，下不为例。
o·ver·night [ˌəʊvəˈnaɪt] ....................CET4 CET6 考研
形 彻夜的，过夜的，突然的
副 整夜地
参考句型 not both / all / every...
▶形 Not every actress can win overnight fame with her first film.
不是每个女演员都能凭借自己的第一部电影而一举成名。
▶副 Not every person is lucky enough to become rich overnight.
不是每个人都能幸运地一夜致富。
o·ver·take [ˌəʊvəˈteɪk] ......................... CET4 CET6 考研 IELTS
动 赶上；突击
动词变化 overtake, overtook, overtaken
参考句型 ...so that...
▶I had to walk very fast so that I could overtake you.
为了赶上你，我不得不走得很快。
o·ver·throw [ˈəʊvəθrəʊ] .....................CET6 考研 IELTS GRE
动 推翻；瓦解
动词变化 overthrow, overthrew, overthrown
参考句型 it is no wonder that...
▶It is no wonder that their attempt to overthrow the government ended in nothing because their idea is not reasonable.
难怪他们推翻政府的企图终成泡影，因为他们提出来的构想很不合理。
ox·y·gen [ˈɒksɪdʒən] .......................考研 TOEFL
名 氧
参考句型 it is obvious / clear that...
▶It is quite clear that she died from lack of oxygen.
很显然她是因为缺氧而死的。