英语专业八级核心词汇全突破(中)(O)【圣才出品】

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O
基础词汇
oblige [E5blaidV] v. 对…感激;施恩惠于
【例句】Could you oblige me by closing the door? 请你为我关上门好吗?
【词组】be obliged to sb. 感谢(某人)
oblige (sb) with 给…
【派生】obligation n. 义务;职责;债务
obscure [Eb5skjuE] adj. 模糊的,不清楚的;费解的;不出名
v. 使朦胧,遮掩,使难理解
【例句】Words that obscure the truth must be discarded. 必须摒弃混淆真相的词语。

【助记】obs(看作ob强调)+ cur(流)+ e→流下的泪水模糊了她的视线→模糊不清的
【派生】obscurity n. 朦胧;阴暗;晦涩;身份低微;不分明
observance [Eb5zE:vEns] n. 遵守,奉行;(宗教)仪式,庆祝(节庆)
【例句】The worker was praised for his observance of the rules. 这个工人因为严格遵守规则而受到了表扬。

observant [Eb5zE:vEnt] adj. 机警的,善于观察的;严格遵守的
【例句】Journalists are trained to be observant. 新闻记者都要训练成有敏锐观察力的人。

offensive [E5fensiv] adj. 冒犯的;进攻性的;极讨厌的
【例句】①The advertisements were highly offensive to woman. 这些广告令女士们大为反感。

②We had no counter left to an offensive. 我们已没有相应的手段来对付进攻了。

【搭配】offensive remarks 冲撞的话语
offensive weapons 进攻性武器
the offensive line 攻击线
【助记】offen(冒犯)+ sive(形容词后缀)→冒犯的,唐突的
oncoming [5CNkQmiN] adj. 即将到来的
【例句】The fishermen were forewarned of the oncoming of the storm. 渔民预先得
到了暴风雨来临的警告。

【搭配】the oncoming of winter 冬天的来临
oncoming traffic 迎面驶来的车辆
ongoing [5Cn^EuiN] adj. 持续的,继续的
【例句】One major oceanographic venture is the ongoing Deep Sea Drilling Project of the U. S. National Science Foundation.
目前海洋学上的一大壮举,就是美国国家科学基金会的深海钻探工程。

【搭配】an ongoing debate 持续的辩论
an ongoing programme of research 正在进行的研究计划
onset [5Rnset] n. 开始,突击
【例句】He went to see a doctor at the onset of a fever. 他开始发烧时便去看医生了。

【搭配】the onset of winter 冬天的突然降临
operative [5CpErEtiv, 5CpEreitiv] adj. 有效的,起作用的,转动的
【例句】The station will be operative again in January. 该车站将于一月份恢复使用。

【搭配】operative treatment 手术治疗
【助记】operat(有效,起作用)+ ive(形容词后缀)→有效的,起作用的
opt [Cpt] v. 选择,抉择
【例句】Most people opt for buying their own homes rather than renting them. 大多数人愿意买房子而不愿意租房子。

【搭配】opt for 选择
opt out 决定退出;插播;请求免除
opt out of 决定不参加…;决定(从…)退出
opt in 选择参加
optimize [5Cptimaiz] v. 使最优化
【例句】①We must optimize the opportunities for better understanding. 我们必须充分利用机会作更进一步的了解。

②Optimize the environment for investment. 尽可能优化投资环境。

orbital [5C:bitl] adj. 轨道的,活动范围的
【例句】The first orbital test flight is scheduled for just two and a half years from
now.
预计第一次轨道试验飞行将在两年半后进行。

outgoing [5aut^EuiN] adj. 卸任的;外向的,善于交际的
【例句】He’s never been an outgoing type. 他可不是那种好交际的人.
【搭配】the outgoing government 即行交班的政府
the outgoing president 将卸任的总统.
outnumber [aut5nQmbE] v. 比…多,数量上超过
【例句】We were outnumbered two to one by the enemy, i.e. There were twice as many of them.
我们的人数只及敌人的一半。

outreach [aut5ri:tF] v. 超过;比…到达更远
【例句】The demand outreaches the supply. 供不应求。

【词组】outreach session 扩大会议
an educational outreach to illiterate adults 对文盲的教育服务项目扩大outspoken [aut5spEukEn] adj. 直言的,坦率的
【例句】Hans got in bad with some of his friends because of his outspoken opposition to the war.
汉斯因为坦率地反对这场战争,使得他的一些朋友不再喜欢他了。

【词组】be outspoken in one’s remarks 直言不讳
outweigh [aut5wei] v. 比…更重要,在(价值、影响等)超过
【例句】On balance, his accomplishments outweigh his faults. 权衡起来,他的成就要大于他的过失。

【词组】honesty outweighs wealth 诚实较财富重要
overview [5EuvEvju:] n. 概观,概略
【例句】The opening chapter gives a general overview of the subject. 开篇第一章是对主题的概述。

核心词汇
oasis [Eu5eisis] n. 沙漠的绿洲;(在枯燥或不愉快环境中的)胜地。