B2 verb /ˌoʊvərˈiːt/

overeat

幸福

Meaning

To eat more food than the body needs.

Example

She tends to overeat when she is stressed.

她在收到奖项时无法掩饰自己的幸福。

C1 adjective /ˌəʊvərˈstɪmjʊˌleɪtɪd/

overstimulated

过度刺激的

Meaning

Excessively excited or aroused, overwhelmed by too much stimulus.

Example

Overstimulated minds can lead to burnout and decreased productivity.

过度刺激的头脑可能导致倦怠和生产力下降。

A1 pronoun /aʊərz/

ours

我们的

Meaning

belonging to or associated with us

Example

This victory is ours.

这个胜利是我们的。

C1 noun /ˈaʊtˌɡroʊθ/

outgrowth

衍生物

Meaning

something that grows out of something else; a natural development or result

Example

The new policy was an outgrowth of years of debate.

新政策是多年辩论的衍生物。

C1 noun /ˈɒktɪv/

octave

Meaning

A series of eight musical notes, or the interval between one musical pitch and another with double its frequency.

Example

The singer's voice could easily reach the higher octave.

C2 adjective /ˌɔːfˈkiː/

off-key

跑调

Meaning

out of tune; not in accordance with expected standards

Example

The singer was slightly off-key during the performance.

歌手在表演时稍微跑调了。

A1 verb /ˈoʊpən/

open

打开

Meaning

to move something so as to allow access; to begin

Example

Please open the door for me.

请为我打开门。

B2 noun /ˈɔːrɡənaɪzər/

organizer

组织者

Meaning

a person who arranges or coordinates activities, events, or groups; a tool or item used to keep things in order

Example

She worked as the main organizer of the international conference.

她是这次国际会议的主要组织者。

C1 adjective /oʊˈbiːs/

obese

肥胖

Meaning

Extremely overweight; having an excessive amount of body fat.

Example

The doctor advised the obese patient to adopt a healthier lifestyle.

医生建议肥胖的病人采取更健康的生活方式。

C1 adjective ˈɒk.sɪ.də.tɪv

oxidative

与氧化相关

Meaning

Related to or caused by oxidation, especially cellular damage from free radicals.

Example

Excess stress can lead to oxidative damage in cells.

过度的压力可能导致细胞中的氧化损伤。

A1 noun/adjective/adverb /ˌaʊtˈsaɪd/

outside

外面

Meaning

the external part or surface of something; beyond the boundary

Example

Children were playing outside in the yard.

孩子们在院子外面玩。

C2 noun /ˌɒstɛnˈteɪʃən/

ostentation

炫耀

Meaning

excessive display of wealth or knowledge intended to attract admiration or envy

Example

The billionaire’s party was full of ostentation and luxury.

亿万富翁的派对充满了炫耀和奢华。

C1 verb /ˌoʊvərˈʃædoʊ/

overshadow

掩盖

Meaning

to appear more important or significant than something else, reducing its impact

Example

The scandal overshadowed his achievements.

丑闻掩盖了他的成就。

B1 adjective /əˈkeɪ.ʒən.əl/

Occasional

偶然的

Meaning

occurring infrequently or irregularly; happening from time to time

Example

She enjoys occasional walks in the park.

她喜欢在公园里偶尔散步。

A2 noun /ˈɒf.ɪs/

office

办公室

Meaning

a room or building where people work, usually at desks

Example

She left the office early to attend a family event.

她提前离开办公室去参加家庭活动。

A2 noun /ˈʌn.jən/

Onion

洋葱

Meaning

a round vegetable with a strong taste and smell, made up of many layers

Example

I need to chop some onions for the curry recipe.

我需要切一些洋葱来做咖喱菜谱。

B2 adjective /aʊtˈreɪdʒəs/

outrageous

骇人听闻

Meaning

Shockingly bad or excessive; very unusual or amusing.

Example

The comedian told an outrageous joke.

这位喜剧演员讲了一个骇人听闻的笑话。

B2 adjective /ˈɔː.rəl/

Oral

口头的；与嘴巴相关的

Meaning

spoken rather than written; relating to the mouth

Example

The oral examination will test your speaking skills.

口头考试将测试你的口语技能。

B2 noun /ˈɔːɡənɪzəm/

organism

有机体

Meaning

a living thing that has an organized structure and can grow and reproduce

Example

Every organism needs water to survive.

每个有机体都需要水才能生存。

A1 noun /ɒkˈtoʊbər/

october

十月

Meaning

the tenth month of the year in the Gregorian calendar

Example

The weather becomes cooler in October.

十月天气开始变凉。

C2 noun /ɔːrˈθɑːɡrəfi/

orthography

拼写法

Meaning

The conventional spelling system of a language.

Example

English orthography can be confusing for learners.

英语的拼写法对学习者来说可能是令人困惑的。

C1 noun ˌɒp.tɪ.maɪˈzeɪ.ʃən

optimization

优化

Meaning

Improving processes to increase performance and efficiency.

Example

SEO optimization helps websites rank higher on search engines.

SEO优化帮助网站在搜索引擎中排名更高。

B2 noun /ɒpˈtɪʃən/

optician

眼镜师

Meaning

A person who makes or sells glasses and contact lenses.

Example

The optician adjusted my new glasses to fit better.

眼镜师调整了我的新眼镜，以便更好地适应。

C2 noun /ˈɒlɪv bɑːb/

Olive barb

橄榄鲃

Meaning

A small freshwater fish with olive-colored body and barbels

Example

The olive barb is commonly found in South Asian rivers.

橄榄鲃常见于南亚的河流中。

B1 noun /ˈɒbstəkəlz/

obstacles

障碍

Meaning

Things that block one's way or prevent or hinder progress.

Example

Obstacles in life can often lead to valuable lessons.

生活中的障碍常常导致宝贵的教训。

B2 adverb /əˈfɪʃəli/

officially

正式地

Meaning

in a formal or authorized way

Example

The building was officially opened by the mayor.

这座建筑由市长正式开幕。

C1 adjective /əbˈtjuːs/

Obtuse

迟钝的; 愚笨的; 理解慢

Meaning

annoyingly insensitive or slow to understand; lacking in intelligence or perception

Example

He was being deliberately obtuse about the instructions.

他故意在指令上表现得迟钝。

C1 noun /ˌɒk.sɪ.dʒɪˈneɪ.ʃən/

oxygenation

供氧或氧气治疗

Meaning

The process of supplying or treating with oxygen.

Example

Deep breathing exercises improve oxygenation of the body.

深呼吸练习有助于改善身体的供氧。

A2 adjective /əˈlɪmpɪk/

olympic

奥林匹克

Meaning

related to the Olympic Games, a major international sporting event

Example

She trained hard to compete in the Olympic Games.

她努力训练，为了参加奥林匹克运动会。

B2 noun /ˌɒpəˈzɪʃən/

opposition

反对

Meaning

the action of opposing or resisting something

Example

The opposition to the new law was strong.

对新法律的反对很强烈。

C2 noun /ˈɑːbəlɪsk/

obelisk

方尖碑

Meaning

A tall, four-sided, narrow tapering monument with a pyramid-shaped top.

Example

The ancient Egyptians built obelisks to honor their gods.

古埃及人建造了方尖碑来纪念他们的神。

B2 noun /ˈaʊt.breɪk/

Out-break

爆发

Meaning

a sudden occurrence or eruption of something, especially disease or violence

Example

The outbreak of flu affected many students in the school.

流感的爆发影响了学校的许多学生。

C1 verb /ˈɒs.ɪ.leɪt/

oscillate

在两个点或状态之间来回摆动或移动

Meaning

To swing or move back and forth between two points or states

Example

The stock market tends to oscillate during uncertain times.

股市在不确定的时期往往会波动。

C2 noun /ˌɔːrnɪˈθɒlədʒɪst/

ornithologist

鸟类学家

Meaning

a scientist who studies birds

Example

The ornithologist spent years studying migratory birds.

这位鸟类学家花了多年时间研究迁徙鸟类。

C2 noun /ˌɔːrnɪˈθɑːlədʒi/

ornithology

鸟类学

Meaning

the scientific study of birds

Example

She pursued ornithology to understand the migration patterns of birds.

她追求鸟类学以了解鸟类的迁徙模式。

C2 noun ˌɒbfəsˈkeɪʃən

obfuscation

混淆, 迷惑

Meaning

The action of making something obscure, unclear, or unintelligible.

Example

The obfuscation of the data made it difficult to interpret.

数据的混淆使得它们难以解释。

B2 noun /ˈaʊtbɜːrst/

outburst

情感或活动的突然爆发

Meaning

a sudden release of strong emotion or activity

Example

She had an angry outburst during the meeting.

她在会议期间突然发火。

C1 noun /ˌɑːpərˈtuːnɪst/

opportunist

机会主义者

Meaning

A person who takes advantage of situations for personal gain, often disregarding principles.

Example

He is seen as an opportunist who always puts his interests first.

他被看作是一个机会主义者，总是把自己的利益放在第一位。

C1 adjective /əbˈnɒkʃəs/

Obnoxious

令人讨厌的；惹人厌的；极其讨厌的

Meaning

extremely unpleasant; offensive; annoying

Example

His obnoxious behavior at the party annoyed everyone.

他在聚会上的令人讨厌的举止惹恼了在场的每一个人。

C1 noun /ˈɔːrθədɑːksi/

orthodoxy

正统

Meaning

traditional or generally accepted beliefs and practices

Example

The religious leader defended the orthodoxy of the faith.

宗教领袖捍卫了信仰的正统性。

B2 adjective /ˌoʊvərˈwɛlmɪŋ/

overwhelming

压倒性的

Meaning

Very intense; overpowering.

Example

Large tasks can feel overwhelming.

大型任务可能会让人感到压倒。

C1 verb /aʊtˈlæst/

outlast

比...持续更久

Meaning

to continue longer than; to endure beyond someone or something else

Example

The old castle has outlasted many generations.

这座古老的城堡已经比许多代人持续得更久。

B2 noun /ˈɒpəreɪtər/

operator

操作员

Meaning

a person who operates equipment, a business, or controls something

Example

The machine operator ensured that everything ran smoothly.

机器操作员确保一切顺利运行。

A2 adjective /ɒd/

Odd

奇怪的; 不寻常的; 不同于正常或预期的

Meaning

strange; unusual; different from what is normal or expected

Example

That's an odd way to solve the problem.

那是解决问题的一种奇怪方式。

C1 noun /əˈkɜr.əns/

Occurrence

事件

Meaning

an instance or event of something happening; the fact of occurring

Example

The occurrence of earthquakes is common in this region.

地震的发生在这个地区很常见。

B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃənz

organizations

组织

Meaning

Organized groups of people with a particular purpose

Example

Organizations play a key role in policymaking.

组织在政策制定中发挥着重要作用。

A1 adjective /əʊˈkeɪ/

okay

没问题

Meaning

used to express agreement or acceptance

Example

It's okay to leave early today.

今天早些离开没问题。

B2 verb /ɒpt/

opt

选择

Meaning

to choose or decide to do something instead of something else

Example

Many students opt to study abroad for better opportunities.

许多学生选择出国留学以获得更好的机会。

B2 noun /wʌn θɜːd/

one-third

三分之一

Meaning

one part of something that is divided into three equal parts

Example

One-third of the class was absent today.

班级的三分之一今天缺席。

B2 noun ɔːˈɡæn.ɪk fuːdz

organic foods

有机食品

Meaning

Food produced without the use of chemicals such as artificial pesticides, fertilizers, or other artificial agents.

Example

Organic foods are healthier than processed foods.

有机食品比加工食品更健康。

B2 noun /ˈɔːrnəmənt/

ornament

装饰品

Meaning

A decorative object that adds beauty to something.

Example

The Christmas tree was decorated with colorful ornaments.

圣诞树上装饰着五颜六色的装饰品。

A2 noun /ˈʌv.ən/

Oven

烤箱

Meaning

an enclosed compartment used for heating, baking, or drying food

Example

She baked cookies in the oven for thirty minutes.

她在烤箱里烤了三十分钟的饼干。

C1 adjective /əbˈstrʌk.tɪv/

Obstructive

阻碍性的

Meaning

deliberately creating difficulties or preventing progress; hindering or blocking something

Example

The obstructive policies hindered economic growth.

这些阻碍性的政策阻碍了经济增长。

C1 noun /ˈɔr.ə.kəl/

Oracle

神谕

Meaning

a person regarded as a source of wise counsel; in ancient times, a priest or priestess acting as a medium

Example

The ancient Greeks consulted the oracle at Delphi.

古希腊人曾在德尔菲咨询神谕。

B1 noun /ˈɑb.stə.kəl/

Obstacle

障碍

Meaning

something that blocks or makes progress difficult; a barrier

Example

Bad weather was the main obstacle to our journey.

坏天气是我们旅行的主要障碍。

B1 adjective /ˌoʊvərˈsiːz/

overseas

海外

Meaning

in or to a foreign country across the sea

Example

He went overseas for higher education.

他去海外深造。

C2 adjective /ˈɒsiəs/

osseous

骨质的

Meaning

consisting of or turned into bone; bony

Example

The fossil showed osseous structures of the ancient creature.

化石展示了古老生物的骨质结构。

C2 noun /ˈɔːfəl/

offal

内脏

Meaning

the internal organs and entrails of an animal used as food; waste parts

Example

The butcher prepared sausages using pork offal.

屠夫使用猪的内脏做香肠。

C2 adjective /ˈoʊ.pən ˈhæn.dɪd/

Open-handed

慷慨的; 自由的

Meaning

Generous; liberal; giving freely;

Example

He is very open-handed with his money and always helps those in need.

他对自己的钱非常慷慨，总是帮助有需要的人。

C2 noun /ˈɒbsɪkwiːz/

obsequies

葬礼仪式

Meaning

Funeral rites or ceremonies.

Example

The obsequies for the late leader drew thousands of mourners.

已故领导人的葬礼吸引了成千上万的哀悼者。

B2 noun /oʊˈbiː.di.əns/

Obedience

服从

Meaning

compliance with an order, request, or law; submission to authority

Example

Children should show obedience to their parents.

孩子们应该对父母表现出服从。

C2 adjective /ˈɔːrəˌtʌnd/

orotund

深沉而清晰的声音

Meaning

full, rich, and clear in sound; pompous in style

Example

The actor's orotund voice filled the theater.

演员的深沉声音充满了剧院。

C2 noun /ˈoʊdiəm/

odium

憎恶

Meaning

general or widespread hatred or disgust directed toward someone as a result of their actions

Example

The scandal brought public odium on the corrupt minister.

丑闻让腐败的部长蒙受了公众的憎恶。

B2 noun /ɒdz/

odds

可能性

Meaning

the likelihood or probability of something happening; chances for or against something

Example

The odds of winning the lottery are very low.

中彩票的机会非常小。

B2 noun /ˈɔːkɪstrə/

orchestra

管弦乐队

Meaning

a large group of musicians playing different instruments together

Example

The orchestra performed beautifully at the concert.

管弦乐队在音乐会上演奏得非常出色。

C1 noun /ˈɔːrdɪnəns/

ordinance

法令

Meaning

An authoritative rule, law, or decree issued by a city, town, or authority.

Example

The city council passed an ordinance banning smoking in public parks.

市议会通过了一项法令，禁止在公共公园内吸烟。

B2 adjective /ˈɔː.də.li/

Orderly

有序的; 系统的; 平静的

Meaning

well-organized; systematic; peaceful

Example

Please keep your desk orderly and clean.

请保持您的桌面整齐和干净。

C2 noun /ˈaʊtˌrɪɡər/

outrigger

稳定结构

Meaning

a projecting structure on a boat, used for stability, or a boat fitted with such support

Example

The fisherman paddled his outrigger canoe across the lagoon.

渔民划着带有支撑的独木舟穿过泻湖。

C2 noun /ɔːˈreɪʃən/

oration

演讲

Meaning

A formal speech, especially one given on a ceremonial occasion

Example

The president delivered an inspiring oration.

总统发表了鼓舞人心的演讲。

C2 verb /əbˈtruːd/

obtrude

强行介入

Meaning

to force oneself or one's ideas into a situation uninvited or inappropriately

Example

He didn’t want to obtrude into their private conversation.

他不想打扰他们的私人对话。

B2 noun /əbˈdʒek.ʃən/

Objection

反对; 异议; 抗议;

Meaning

an expression of disagreement or disapproval; a reason for disagreeing

Example

The lawyer raised an objection during the trial.

律师在审判过程中提出了异议。

C1 adjective /aʊtˈmoʊdɪd/

outmoded

过时的

Meaning

No longer in fashion or useful; outdated.

Example

That old computer is completely outmoded.

那台旧电脑完全过时了。

B2 noun /ˈaʊtskɜːrts/

outskirts

城市边缘

Meaning

The outer parts of a town or city, away from the center.

Example

They moved to the outskirts of the city for a quieter life.

他们为了更安静的生活搬到了城市的边缘。

C1 noun /əbˈstrʌkʃən/

obstruction

障碍

Meaning

Something that blocks or gets in the way; the action of obstructing.

Example

There was an obstruction on the railway track.

铁路上有一个障碍。

C1 noun/verb /ˈoʊvərˌhæŋ/

overhang

悬垂

Meaning

To extend outward and hang over something; a projecting part.

Example

The roof overhang provides shade in the summer.

屋顶的悬垂部分在夏天提供阴凉。

C2 adjective /ˈɑːsɪˌfaɪd/

ossified

变成骨头，僵硬

Meaning

Turned into bone or become rigid; unwilling to change.

Example

The company had an ossified management structure that resisted innovation.

该公司有一个僵化的管理结构，抵制创新。

C1 verb /ˌoʊvərˈriːtʃ/

overreach

过度伸展

Meaning

to go beyond what is proper, acceptable, or achievable; to overextend

Example

The politician overreached by making promises he couldn't keep.

那位政治家在做出无法兑现的承诺时，过度伸展了自己。

C1 verb /ˈɔːstrəˌsaɪz/

ostracize

排斥

Meaning

to exclude someone from a group or society; to banish or shun

Example

After the scandal, he was ostracized by his former colleagues.

丑闻发生后，他被前同事排斥。

C1 noun ˈoʊʃən əˌsɪdɪfɪˈkeɪʃən

ocean acidification

海洋酸化

Meaning

The ongoing decrease in the pH of the Earth's oceans, caused by the absorption of carbon dioxide from the atmosphere.

Example

Ocean acidification is caused by atmospheric CO2 absorption.

海洋酸化是由大气中CO2的吸收引起的。

B1 noun /əˈkeɪ.ʒən/

Occasion

场合; 特殊事件

Meaning

a particular time or instance of an event; a special celebration

Example

Their wedding was a joyous occasion.

他们的婚礼是一个喜庆的场合。

C1 verb /ˌoʊvərˈrʌn/

overrun

侵占

Meaning

to spread over or occupy completely; to exceed a limit or time

Example

The garden was overrun with weeds.

花园被杂草淹没。

C2 verb /ˌoʊvərˈliːp/

overleap

跳过

Meaning

To jump over something; to omit or disregard something.

Example

He managed to overleap the fence easily.

他轻松地越过了栅栏。

B1 verb অকার্স

occurs

发生

Meaning

Happens or takes place, especially as a result of something.

Example

Snowfall occurs in regions with freezing temperatures.

在气温低于零度的地区会发生降雪。

C1 noun əˈblɪv.i.ən

oblivion

遗忘, 灭绝, 消失

Meaning

The state of being unaware or unconscious of what is happening; complete forgetfulness.

Example

His name faded into oblivion over time.

随着时间的推移，他的名字渐渐消失在遗忘中。

C1 verb /əˈprɛs/

oppress

压迫

Meaning

to keep someone down by harsh and unfair use of authority; to suppress

Example

The dictator oppressed the people for decades.

独裁者压迫人民数十年。

B2 verb /ˌoʊvərˈkʌm/

overcome

克服

Meaning

To succeed in dealing with a problem or difficulty.

Example

You can overcome procrastination with planning.

你可以通过计划来克服拖延症。

C1 adjective ˈɒb.stɪ.nət

obstinate

固执

Meaning

Refusing to change one's mind or accept others' advice easily.

Example

He remained obstinate despite the logical arguments.

尽管有逻辑上的辩论，他依然固执。

C1 noun /əbˈdʒɛktər/

objector

反对者

Meaning

a person who expresses opposition or disapproval to something

Example

The objector raised his concerns during the town meeting.

反对者在市议会会议中表达了他的关切。

C1 adjective /ˌoʊvərˈbɛrɪŋ/

overbearing

专横

Meaning

unpleasantly or arrogantly domineering

Example

His overbearing attitude made everyone uncomfortable.

他的专横态度让所有人都感到不舒服。

B1 noun /ˈɑp.ʃən/

Option

选项

Meaning

a thing that is or may be chosen; an alternative course of action

Example

You have the option to work from home or office.

你可以选择在家工作或在办公室工作。

C1 adjective /ˌaʊtˈspoʊkən/

Outspoken

直言不讳

Meaning

frank; speaking directly

Example

She is known for being outspoken about social issues.

她因直言不讳地谈论社会问题而闻名。

C1 noun /ˈɒf.sprɪŋ/

offspring

后代

Meaning

a person's child or children; an animal's young

Example

The bird carefully fed its offspring.

那只鸟小心地喂养了它的后代。

B1 adjective /əˈbiː.di.ənt/

Obedient

顺从的

Meaning

willing to comply with orders or instructions; submissive

Example

The obedient student always follows the teacher's instructions.

听话的学生总是遵循老师的指示。

B2 adjective /əˈpəʊzd/

opposed

反对的

Meaning

being against or in disagreement with something

Example

She is strongly opposed to animal testing.

她坚决反对动物实验。

B1 adverb /ˈʌðərwaɪz/

Otherwise

否则; 不然

Meaning

in a different way; if not; or else; apart from that

Example

Study hard, otherwise you will fail the exam.

努力学习，否则你会考试失败。

B2 noun /əˈfens/

Offence

罪行; 侵犯法规

Meaning

a breach of law or rule; an annoyance or resentment

Example

Stealing is a serious offence punishable by law.

盗窃是严重的罪行，依法可追究。

C1 adjective /ˈɔːrθədɑːks/

orthodox

Meaning

conforming to traditional beliefs or practices

Example

He comes from a very orthodox family.

B2 adjective /aʊtˈstændɪŋ/

outstanding

杰出

Meaning

extremely good or impressive; not yet resolved or paid

Example

She received an award for her outstanding performance.

她因出色的表现获得了奖项。

C1 adjective /ˌɔːrnəˈmɛntl/

ornamental

装饰性的

Meaning

Serving as decoration; decorative rather than functional.

Example

The garden was filled with ornamental plants.

花园里满是装饰性的植物。

C1 noun /ˈɒstrəsɪzəm/

ostracism

排斥

Meaning

The act of excluding someone from a group or society.

Example

The student faced ostracism after breaking the rules.

学生在违反规则后遭受了排斥。

C1 adjective /ˌɔːrθəˈpiːdɪk/

orthopedic

与骨骼或肌肉畸形的矫正有关

Meaning

Relating to the correction of deformities of bones or muscles.

Example

She visited an orthopedic surgeon for her back pain.

她因为背痛去看了骨科医生。

A2 preposition /ˈɒntu/

onto

在…上

Meaning

moving to a position on the surface of something

Example

She jumped onto the table to get the book.

她跳到桌子上去拿书。

C2 noun /oʊliˈændər/

Oleander

夹竹桃

Meaning

a poisonous evergreen shrub with clusters of white, pink, or red flowers

Example

The beautiful oleander flowers bloomed in the garden despite their toxic nature.

美丽的夹竹桃花在花园里盛开，尽管它们有毒。

B2 noun /ˈɒs.trɪtʃ/

Ostrich

鸵鸟

Meaning

a large flightless bird native to Africa with long legs and neck

Example

The ostrich is the world's largest bird.

鸵鸟是世界上最大的鸟。

B1 verb /ˈɒpəreɪtɪŋ/

operating

操作

Meaning

to control or manage the functioning of something

Example

The company has been operating in this market for five years.

公司已经在这个市场运营了五年。

C1 verb /aʊtˈlɪv/

outlive

比…活得长

Meaning

to live longer than someone or something else

Example

She outlived all her siblings.

她活过了所有的兄弟姐妹。

C1 adjective /ˈɒptɪk/

optic

光学的

Meaning

Relating to the eye or vision.

Example

The optic nerve carries signals from the eye to the brain.

视神经将信号从眼睛传递到大脑。

C1 noun /ˈoʊ.mən/

Omen

未来好运或厄运的征兆

Meaning

an event regarded as a sign of future good or bad luck

Example

Many people consider a black cat crossing your path a bad omen.

许多人认为一只黑猫横穿你的路是一个坏预兆。

C2 verb /ˈoʊɡəl/

ogle

色迷迷地看

Meaning

To look at someone with obvious sexual interest.

Example

He kept ogling the models on the runway.

他一直盯着跑道上的模特看。

B1 noun /əˈpɪn.jən/

Opinion

意见

Meaning

a view or judgment formed about something; a belief or assessment based on grounds short of proof

Example

In my opinion, this is the best solution.

在我看来，这是最好的解决方案。

B2 noun /ˈaʊtˌsɛt/

outset

开始

Meaning

the beginning or start of something

Example

From the outset, the project seemed ambitious but achievable.

从一开始，项目看起来雄心勃勃但可以实现。

B2 adjective /əˈfen.sɪv/

Offensive

冒犯的; 侮辱的; 攻击性的

Meaning

causing displeasure or resentment; insulting; aggressive

Example

His offensive remarks hurt everyone's feelings.

他的冒犯言论伤害了每个人的感情。

C1 adjective /əˈblɪɡ.ə.tɔː.ri/

obligatory

强制的

Meaning

Required by a legal, moral, or other rule; compulsory.

Example

Wearing a seatbelt is obligatory in most countries.

在大多数国家，系安全带是强制的。

B2 noun ˈoʊzoʊn dɪˈpliʃən

ozone depletion

臭氧消耗

Meaning

The reduction in the amount of ozone in the Earth's stratosphere, leading to increased UV radiation.

Example

Ozone depletion increases UV radiation.

臭氧消耗增加了紫外线辐射。

B2 noun /əˈpoʊ.nənt/

Opponent

对手; 竞争者

Meaning

a person who disagrees with or resists a proposal or practice; someone who competes against another

Example

The chess player defeated his strongest opponent.

象棋选手击败了他最强的对手。

B2 verb /ˌoʊvərˈlʊk/

overlook

忽略

Meaning

to fail to notice or consider something; to have a view from above

Example

It's easy to overlook small details when you're in a hurry.

当你赶时间时，很容易忽略小细节。

C1 adverb /ˈɒp.tɪ.məl.i/

optimally

最优地

Meaning

In the most effective or efficient way possible.

Example

Tasks should be allocated optimally for maximum output.

任务应当最优地分配，以实现最大产出。

B2 verb /əˈpoʊz/

oppose

反对

Meaning

to disagree with or resist; to act against

Example

Many citizens oppose the new tax policy.

许多公民反对新的税收政策。

C2 adjective /əˈrækjələr/

oracular

神谕的

Meaning

Resembling an oracle; giving wise, mysterious, or prophetic statements

Example

Her oracular words left the audience deep in thought.

她的神谕般的话让观众陷入了深思。

B2 noun /ˈaʊt.laɪn/

Outline

大纲; 轮廓; 摘要

Meaning

a general description or plan showing the essential features of something; the main points

Example

The teacher provided an outline of the course syllabus.

老师提供了课程大纲。

C2 verb /ˌaʊtməˈnuːvər/

outmaneuver

巧妙地战胜

Meaning

to gain an advantage over an opponent by skillful or clever action

Example

The smaller company managed to outmaneuver its larger rival.

小公司成功地战胜了它的大对手。