B1 noun /ˌɒp.əˈtjuː.nə.ti/

opportunity

机会

Meaning

A favorable chance or set of circumstances that makes it possible to do something.

Example

She seized the opportunity to study abroad.

她抓住了去国外学习的机会。

B1 adjective /ˈaʊtər/

outer

外部

Meaning

situated on or toward the outside; external

Example

The outer layer of the jacket is waterproof.

夹克的外层是防水的。

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。

B1 adjective /əˈfɪʃəl/

official

官方

Meaning

relating to or connected with an authority or public office

Example

He is the official spokesperson for the company.

他是公司的官方发言人。

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。

B1 verb /oʊ/

owe

欠债

Meaning

to be under obligation to pay or repay; to be indebted

Example

I owe my success to my parents' support.

我将我的成功归功于父母的支持。

B1 noun /ˌɑk.jəˈpeɪ.ʃən/

Occupation

职业; 工作; 占领

Meaning

a job or profession; the action of taking control of a place

Example

Teaching is her chosen occupation.

教学是她选择的职业。

B1 verb /əˈkɜːr/

occur

发生

Meaning

to happen or take place; to be found or present

Example

The accident occurred at the intersection during rush hour.

事故发生在高峰时段的交叉口。

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。

B1 noun /ˈɔːfɪsər/

officer

警官

Meaning

a person in a position of authority, especially in law enforcement

Example

The officer gave him a ticket for speeding.

警官因超速给了他一张罚单。

B1 noun ˈɒk.sɪ.dʒən

oxygen

氧气。无色、无味的气体，是生命必不可少的成分。

Meaning

A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

Example

Oxygen is vital for life.

氧气对生命至关重要。

B1 adjective /əˈrɪdʒ.ɪ.nəl/

Original

原始的; 主要的; 真实的

Meaning

first; fundamental; primary; authentic

Example

This is the original document, not a copy.

这是原始文件，不是副本。

B1 adverb /əˈrɪdʒɪnəli/

originally

最初

Meaning

in the beginning, at first

Example

Originally, she wanted to be a doctor.

最初，她想成为一名医生。

B1 adjective /ˌoʊvərˈweɪt/

overweight

超重

Meaning

heavier than is considered healthy or normal

Example

The doctor advised him to lose weight as he was overweight.

医生建议他减肥，因为他超重。

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。

B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃən

organization

组织

Meaning

An organized group of people with a particular purpose, such as a business or government department.

Example

The organization was officially inaugurated in 2024.

该组织于2024年正式启用。

B1 noun əbˈdʒek.tɪv

objective

目标

Meaning

A thing aimed at or sought; a goal.

Example

The main objective is to test sustainability.

主要目标是测试可持续性。

B1 verb /ˈɒpəreɪt/

operate

操作

Meaning

to function; to control or manage; to perform surgery

Example

The surgeon will operate on the patient tomorrow.

外科医生明天将为病人做手术。

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。

B1 verb /ˈɔːrɡənaɪz/

organize

组织

Meaning

to arrange systematically; to plan and coordinate

Example

She organized a surprise party for her friend.

她为她的朋友组织了一个惊喜派对。

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。

B1 noun /aʊl/

Owl

猫头鹰

Meaning

a nocturnal bird of prey with large eyes and a hooked beak

Example

The owl hooted softly in the darkness of the forest.

猫头鹰在森林的黑暗中轻轻地叫了。

B1 noun /ˈɑː.lɪv/

Olive

橄榄

Meaning

a small oval fruit with a hard pit, typically green or black, used for eating or making oil

Example

Olive oil is considered one of the healthiest cooking oils available.

橄榄油被认为是最健康的烹饪油之一。

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 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。

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。

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。

B1 verb /əbˈzɜːrv/

observe

观察

Meaning

to watch carefully; to notice or perceive something

Example

Scientists observe the behavior of animals in the wild.

科学家观察野生动物的行为。

B1 adjective /ˌoʊld ˈfæʃənd/

old-fashioned

过时的

Meaning

not modern; belonging to an earlier time

Example

He still wears an old-fashioned hat.

他仍然戴着一顶过时的帽子。

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。

B1 noun ˌɒpəˈtjuːnɪtiz

opportunities

机会

Meaning

A set of circumstances that makes it possible to do something; chances for advancement or success.

Example

Opportunities for jobs decreased.

工作的机会减少了。

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。

B1 noun /ˌɒpəˈreɪʃən/

operation

手术

Meaning

an act or process of functioning or operating

Example

The hospital performed a successful operation.

医院进行了成功的手术。

B1 adjective, adverb /ˈoʊvərɔːl/

overall

总体上

Meaning

in general or as a whole

Example

Overall, the project has been successful.

总体上，项目已成功。

B1 adjective /ˈɔːɡənaɪzd/

organized

有条理的

Meaning

Arranged in a systematic way, especially on a large scale.

Example

An organized approach to work increases productivity and reduces stress.

有条理的工作方法可以提高生产力并减少压力。

B1 adverb /əˈkeɪʒənəli/

Occasionally

偶尔; 有时;

Meaning

sometimes; from time to time; not regularly

Example

I occasionally visit my grandmother on weekends.

我偶尔在周末去看望我的祖母。

B1 noun /ˈɔr.ə.ʒɪn/

Origin

起源

Meaning

the point or place where something begins, arises, or is derived; the source

Example

Scientists are studying the origin of the universe.

科学家正在研究宇宙的起源。