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B2 noun /ˌɛksɪˈkjuːʃən/

execution

执行，实施
Meaning
the act of carrying out a plan, order, or legal sentence
Example
The success of a project depends on its proper execution.
项目的成功取决于其正确的执行。
C2 noun /ɪˌdʒækjʊˈleɪʃən/

ejaculation

射精 / 突然的呼喊
Meaning
The action of suddenly saying something or the release of semen during sexual climax.
Example
His sudden ejaculation of joy surprised everyone in the room.
他突然的欢乐射精让房间里的每个人都感到惊讶。
B2 noun ɪnˈhɑːns.mənt

enhancement

增强
Meaning
An increase or improvement in quality, value, or extent.
Example
Enhancement of education quality is vital.
教育质量的提升至关重要。
C1 adjective /ɪmˈbrɔɪld/

embroiled

卷入
Meaning
being deeply involved in a difficult situation, conflict, or scandal
Example
She found herself embroiled in a heated family dispute.
她发现自己卷入了一场激烈的家庭争执。
A1 noun /end/

End

结束; 终结; 结尾;
Meaning
the final part of something; termination or conclusion
Example
The end of the movie was unexpected and left everyone surprised.
电影的结局是意外的，所有人都感到惊讶。
C2 noun /ɪkˈskrɛsəns/

excrescence

异常生长
Meaning
An abnormal outgrowth or lump, often considered unattractive.
Example
The building was considered an excrescence on the landscape.
这座建筑被认为是景观中的一种异常生长。
C2 noun /ˈɛlɪdʒi/

elegy

挽歌
Meaning
A poem or song expressing sorrow, especially for someone who has died.
Example
The poet wrote an elegy for his late friend.
诗人为他已故的朋友写了一首挽歌。
C2 adjective /ˌɛkspəˈdɪʃəs/

expeditious

迅速
Meaning
Done with speed and efficiency.
Example
The expeditious delivery of the package was appreciated.
包裹的迅速配送得到了赞赏。
B1 adjective /ˈiː.ɡər/

Eager

渴望的; 兴奋的; 热切的
Meaning
showing keen interest; enthusiastic; having or showing desire and excitement
Example
She was eager to start her new job.
她急切地等待着开始她的新工作。
B1 noun /ˈɝːθ.kweɪk/

earthquake

地震
Meaning
A sudden and violent shaking of the ground as a result of movements within the earth's crust.
Example
A powerful earthquake struck Japan last night.
昨晚日本发生了强烈的地震。
B1 adverb /ˈɛlswɛr/

elsewhere

在别的地方
Meaning
In, at, or to some other place.
Example
If you can’t find it here, try looking elsewhere.
如果你在这里找不到，试着去别的地方找找。
B2 verb, noun /ɪnˈdevər/

endeavour

努力
Meaning
To try hard to achieve something; an attempt or effort
Example
She endeavoured to finish the project on time.
她努力按时完成项目。
C1 noun /ˈiːɡoʊˌɪzəm/

egoism

自我主义
Meaning
An ethical theory that treats self-interest as the foundation of morality; also, excessive preoccupation with oneself.
Example
His decisions were often driven by egoism rather than concern for others.
他的决定常常受到自我主义的驱使，而不是关心他人。
A2 noun /ˈen.ə.mi/

Enemy

敌人
Meaning
a person who is actively opposed or hostile to someone or something
Example
In the story, the hero had to face his greatest enemy.
在故事中，英雄不得不面对他最大的敌人。
B2 noun /ˌek.spekˈteɪ.ʃən/

Expectation

期望; 希望;
Meaning
a strong belief that something will happen or be the case; anticipation
Example
The new teacher exceeded everyone's expectations with her innovative teaching methods.
新老师通过其创新的教学方法超越了所有人的期望。
C1 adjective ˈek.wɪ.tə.bəl

equitable

公平的
Meaning
Fair and impartial
Example
Equitable AI ensures fairness in technology use.
公平的人工智能确保了技术使用中的公平性。
B1 noun /ˈiː.tɪŋ ˈhæb.ɪts/

eating habits

饮食习惯
Meaning
A person's usual pattern and preferences in food consumption.
Example
Developing good eating habits leads to better health.
养成良好的饮食习惯有助于改善健康。
C2 adjective /ˌjuːləˈdʒɪstɪk/

eulogistic

赞美的
Meaning
Expressing praise or admiration, often formally.
Example
The speaker gave a eulogistic account of the leader’s achievements.
演讲者对领导人的成就给予了赞美的评价。
B1 noun /ˌiː.kəˈnɒm.ɪk ɡrəʊθ/

Economic Growth

经济增长
Meaning
The increase in the production of goods and services in an economy over time, measured by the expansion of economic output, income, and investment.
Example
The country's economic growth has been remarkable over the past decade.
该国的经济增长在过去十年中表现出色。
C1 verb /ɪkˈstɔːrt/

extort

勒索
Meaning
to obtain something, especially money, by force, threats, or unfair means
Example
The gang attempted to extort money from local shopkeepers.
这个团伙试图从当地店主那里勒索钱财。
A2 verb /ˈeksərsaɪz/

exercise

锻炼
Meaning
to do physical activity; to use or practice
Example
I exercise at the gym three times a week.
我每周三次在健身房锻炼。
C1 adverb ˌekspəˈnenʃəli

exponentially

指数地
Meaning
At a rapidly increasing rate; growing or expanding very quickly and intensely.
Example
Internet adoption is growing exponentially worldwide.
互联网的采用在全球范围内指数增长。
B2 verb/noun /ɪɡˈzɪbɪt/

exhibit

展出
Meaning
To display or show publicly; something put on display.
Example
The museum will exhibit ancient artifacts.
博物馆将展出古代文物。
A2 noun /ɪˈlek.trɪk fæn/

Electric fan

电风扇
Meaning
a device with rotating blades that creates airflow to cool or ventilate a room
Example
The electric fan keeps the room cool during hot summer days.
电风扇在炎热的夏天保持房间凉爽。
B2 noun /ɪmˈbærəsmənt/

embarrassment

尴尬
Meaning
a feeling of self-consciousness, shame, or awkwardness
Example
Her face turned red with embarrassment after the mistake.
她因错误而羞愧得脸红了。
B1 noun /ˌek.sɪˈbɪʃ.ən/

Exhibition

展览
Meaning
a public display of works of art or other items of interest
Example
The art exhibition featured paintings from local artists throughout the region.
这场艺术展览展示了来自本地区的本地艺术家的画作。
C1 adjective /ɪkˈspænsɪv/

expansive

广阔的
Meaning
covering a wide area or having a wide range of ideas or emotions
Example
They enjoyed the expansive view from the hilltop.
他们享受从山顶看到的广阔景色。
A2 noun /ɪɡˈzæm/

exam

考试
Meaning
a formal test of a person's knowledge or skill in a subject
Example
She studied hard for her final exam.
她为了最后的考试努力学习。
C2 adjective /ˌɛlɪˈfæntaɪn/

elephantine

像大象一样的
Meaning
Huge, clumsy, or resembling an elephant in size or movement.
Example
The man moved with an elephantine grace.
那个人以大象般的优雅走动。
C2 verb /ɛksˈproʊprieɪt/

expropriate

征用
Meaning
To take property from its owner, especially by authority or for public use.
Example
The government decided to expropriate the land for a new highway.
政府决定征用这块土地来修建一条新高速公路。
C1 verb /ɪnˈdʒen.dər/

engender

引起
Meaning
To cause or give rise to a feeling, situation, or condition.
Example
The speech engendered hope among the people.
演讲激发了人们的希望。
B2 noun /ˈɜːrnər/

earner

收入者
Meaning
A person who earns money through work or business
Example
She is the primary earner in her family.
她是家庭中的主要收入者。
A1 adjective /ˈevri/

Every

每个; 所有; 无一例外
Meaning
each one; all; without exception
Example
Every student must complete their homework.
每个学生都必须完成作业。
C1 verb ˈɛk.spɪ.daɪt

expedite

加快
Meaning
Make an action or process happen sooner or be accomplished more quickly.
Example
The government took steps to expedite the approval process.
政府采取措施以加快审批流程。
C2 adjective /ˌɛfəˈvɛsənt/

effervescent

充满活力
Meaning
Giving off bubbles; lively, enthusiastic, and full of energy.
Example
She had an effervescent personality that brightened every room.
她有着充满活力的个性，照亮了每个房间。
C1 noun /ˈɛmbləm/

emblem

象征
Meaning
A symbolic object, design, or figure representing an idea, group, or identity.
Example
The dove is an emblem of peace.
鸽子是和平的象征。
C1 adjective ɛnˈdɛm.ɪk

endemic

地方性
Meaning
Native and restricted to a certain place.
Example
The Bengal tiger is endemic to the Indian subcontinent.
孟加拉虎是印度次大陆的地方性物种。
C1 noun /ɒnˈsɒmbəl/

ensemble

合奏, 团体
Meaning
a group of things or people viewed as a whole, especially performers in music or theater
Example
The theater ensemble gave a spectacular performance.
剧院合奏团进行了精彩的演出。
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

神秘的
Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
他给了我一个神秘的微笑。
B2 noun /ɪɡˈzæmɪnər/

examiner

考官
Meaning
A person who tests or inspects knowledge, skills, or qualifications
Example
The examiner reviewed each student's answer sheet carefully.
考官仔细检查了每个学生的答题纸。
C2 noun /ˈjuːfəni/

euphony

和谐的音调
Meaning
The quality of being pleasing to the ear, especially through harmonious combination of words.
Example
The orator's speech was full of euphony and rhythm.
演讲者的演讲充满了和谐的音韵和节奏。
B2 noun /ˌɛvəˈluːʃən/

evolution

进化
Meaning
the gradual development of something, especially from a simple to a more complex form
Example
The theory of evolution explains how species change over time.
进化论解释了物种如何随着时间变化。
B1 verb /ɪɡˈzɪst/

exist

存在
Meaning
to have being or reality; to be present
Example
Dinosaurs existed millions of years ago.
恐龙在几百万年前就存在。
B2 noun /ˌep.ɪˈdem.ɪk/

Epidemic

流行病
Meaning
a widespread occurrence of an infectious disease in a community
Example
The flu epidemic affected thousands of people across the country.
流感疫情影响了全国成千上万的人。
B2 noun /ˈɛseɪ/

essay

论文
Meaning
A short piece of writing on a particular subject.
Example
She wrote an essay about climate change.
她写了一篇关于气候变化的论文。
C1 adjective /ɪkˈsaɪtəbl̩/

excitable

易激动的
Meaning
easily excited or emotionally aroused
Example
The child was excitable and laughed at every small thing.
这个孩子很容易激动，对每个小事都笑。
B2 adjective /ˈɛθnɪk/

ethnic

民族的
Meaning
relating to a population subgroup with a common national or cultural tradition
Example
The festival celebrated the city's diverse ethnic communities.
这个节日庆祝了城市中各种民族的社区。
A1 noun /ɪɡˈzɑːm.pəl/

example

例子
Meaning
a thing or person regarded as a model to be followed or avoided
Example
He is a good example of a hardworking student.
他是一个勤奋学生的好例子。
B2 adjective /ɪkˈstɜːr.nəl/

External

外部的
Meaning
coming from or relating to the outside; not belonging to or originating from within
Example
The company hired external consultants to review their business strategy.
公司聘请了外部顾问来审查他们的商业战略。
C1 noun /ˈek.saɪl/

Exile

流亡
Meaning
the state of being barred from one's native country; enforced removal from one's homeland
Example
The political leader was forced into exile after the military coup.
政治领袖在军事政变后被迫流亡。
B1 noun /ɪɡˈzɪs.təns/

Existence

存在
Meaning
the fact or state of living or having objective reality; being alive
Example
Scientists are searching for evidence of life's existence on other planets.
科学家正在寻找其他星球上生命存在的证据。
C2 verb /ɪɡˈzɪləreɪt/

exhilarate

激动
Meaning
To make someone feel very happy, animated, or excited.
Example
The mountain view exhilarated the travelers.
山脉的景色让旅行者兴奋。
C2 noun /ɪˌpɪstəˈmɒlədʒɪst/

epistemologist

认识论者
Meaning
A scholar or expert who studies the nature, sources, and limits of knowledge.
Example
The epistemologist debated how humans can truly know anything with certainty.
认识论者辩论了人类如何能够确信地知道某些事情。
C1 verb /ɪnˈsjuː/

ensue

发生
Meaning
to happen as a result or consequence
Example
After the argument, silence ensued.
争论后，沉默随之而来。
C1 noun /ɪkˈspʌlʃən/

expulsion

开除
Meaning
The act of forcing someone to leave a place, especially a school or country.
Example
His constant misbehavior led to his expulsion from school.
他不断的坏行为导致他被学校开除。
A2 adjective /ˌjʊərəˈpiːən/

european

欧洲的
Meaning
Relating to Europe or its people.
Example
She studied European history at university.
她在大学学习了欧洲历史。
C1 adjective /ɪˈmeɪʃieɪtɪd/

emaciated

消瘦
Meaning
Abnormally thin or weak, usually due to illness or lack of food.
Example
The emaciated dog was rescued from the abandoned house.
那只消瘦的狗从废弃的房子里被救出来。
C1 verb /ɪkˈstoʊl/

extol

赞扬
Meaning
to praise enthusiastically and highly
Example
The teacher extolled the student's dedication and hard work.
老师赞扬了学生的奉献和辛勤工作。
C2 noun /ˈɪrˌʃɑːt/

earshot

听力范围
Meaning
the range or distance within which a sound can be heard
Example
The children whispered secrets out of earshot of their parents.
孩子们在父母的听力范围之外低声说着秘密。
B1 noun /ˈen.tri/

Entry

入口; 注册
Meaning
an act of going or coming in; an item written or printed in a record
Example
His entry into the competition was submitted just before the deadline.
他在截止日期前提交了参加比赛的入口。
B2 verb /ɪˈlɪmɪneɪt/

eliminate

消除
Meaning
To completely remove or get rid of something.
Example
Eliminate time-wasting habits.
消除浪费时间的习惯。
C1 noun /ˌjuːθəˈneɪʒə/

euthanasia

安乐死
Meaning
The practice of intentionally ending a life to relieve pain and suffering.
Example
The debate about euthanasia raises difficult ethical questions.
关于安乐死的辩论提出了困难的伦理问题。
C1 noun /iːl/

Eel

鳗鱼
Meaning
a long, snake-like fish that lives in both fresh and salt water
Example
The electric eel can generate powerful electric shocks.
电鳗可以产生强大的电击。
B2 noun ˈekwɪti

equity

股权
Meaning
The value of the shares issued by a company.
Example
Owning equity in a company can yield significant returns.
拥有公司股票可能带来可观的回报。
C1 adverb ɪkˌsperɪˈmentəli

experimentally

实验性地
Meaning
In a way that is based on or derived from experiment and observation rather than theory.
Example
Bose demonstrated findings experimentally.
Bose 通过实验性地展示了结果。
C2 verb /ɪnˈsnɛər/

ensnare

设圈套
Meaning
to catch or trap, often by trickery or deceit
Example
The hunter ensnared the rabbit with a net.
猎人用网困住了兔子。
C2 noun /ˈiːən/

eon

纪元
Meaning
an indefinitely long period of time; an age
Example
Dinosaurs lived millions of years ago, in a different eon.
恐龙在几百万年前生活，在一个不同的纪元。
B1 adjective /ɪɡˈzækt/

Exact

精确的; 正确的; 完全正确
Meaning
precise; accurate; completely correct
Example
Please give me the exact time of the meeting.
请告诉我会议的准确时间。
B2 noun /ɪˈmɜːrdʒəns/

emergence

出现
Meaning
the process of coming into view, existence, or prominence
Example
The emergence of new technologies has transformed communication.
新技术的出现改变了沟通方式。
B2 noun ˌel.ɪ.dʒəˈbɪl.ə.ti

eligibility

资格
Meaning
The state of having the right to do or obtain something through satisfaction of the appropriate conditions.
Example
Eligibility criteria maintain fairness.
资格标准确保公平。
C1 adjective /ˌɛm.briˈɒn.ɪk/

embryonic

胚胎的
Meaning
in an early or undeveloped stage; relating to an embryo
Example
The project is still in its embryonic stage.
这个项目仍处于胚胎阶段。
C2 noun /ɪˈklɛktɪˌsɪzəm/

eclecticism

折衷主义
Meaning
A method or practice of deriving ideas, style, or taste from a broad and diverse range of sources.
Example
The architect’s work shows eclecticism by blending modern and traditional elements.
建筑师的作品展示了折衷主义，融合了现代和传统元素。
C2 noun /ˈiːɡlət/

eaglet

小鹰
Meaning
A young eagle.
Example
The eaglet waited in the nest for its mother to return.
小鹰在巢中等待母亲回来。
C2 adjective /ɛɡˈzɪɡjuəs/

exiguous

稀缺
Meaning
small in amount; scanty or inadequate
Example
They survived on exiguous rations during the journey.
他们在旅途中依靠稀缺的口粮生存。
C1 noun /ˈaɪ.wɪt.nəs/

Eyewitness

目击者
Meaning
a person who has seen something happen and can give evidence about it
Example
The police interviewed several eyewitnesses to the accident.
警方采访了多位事故的目击者。
A1 verb /ˈiːtɪŋ/

eating

吃
Meaning
the act of consuming food
Example
They were eating dinner when the phone rang.
他们在吃晚餐时，电话响了。
C2 noun /juːˈdʒen.ɪks/

eugenics

优生学
Meaning
the study or practice of improving the genetic quality of the human population
Example
Eugenics has been criticized for its unethical applications in history.
优生学因其在历史上的不道德应用而受到批评。
B2 verb /ɪnˈkaʊntər/

encounter

遇见 / 遇到
Meaning
to unexpectedly meet someone or experience something, especially something difficult or new
Example
During the hike, we encountered a wild bear.
在徒步旅行中，我们遇到了一只野生熊。
C2 adjective /ɪˈfɛmɪnət/

effeminate

女性化
Meaning
Having traits, tastes, or habits traditionally considered feminine, often used negatively for men.
Example
The critics described him as effeminate due to his gentle manner.
评论家因其温和的举止而将他描述为女性化。
B1 verb /ɪnˈʃʊər/

ensure

确保
Meaning
To make certain that something will happen or be the case.
Example
Please ensure that the door is locked before you leave.
请确保在离开之前门已锁好。
C2 adjective /ˈiːkwaɪn/

equine

与马有关的
Meaning
Relating to or resembling a horse.
Example
The veterinarian specialized in equine medicine.
兽医专门研究马医学。
C2 adjective /ˌɛsəˈtɛrɪk/

esoteric

深奥的
Meaning
intended for or understood by only a small number of people with special knowledge
Example
The professor gave an esoteric lecture on ancient philosophy.
教授做了一场关于古代哲学的深奥讲座。
C2 noun /ˌiː.tiˈɒ.lə.dʒi/

etiology

病因学
Meaning
the cause or origin of a disease or condition
Example
Doctors are studying the etiology of the new virus.
医生们正在研究新病毒的病因学。
B2 verb /ɪnˈdeɪndʒər/

endanger

危及
Meaning
To put someone or something at risk or in danger.
Example
Cutting down forests can endanger many species of animals.
砍伐森林可能会使许多物种面临危险。
C2 adjective ˈɛr.jʊ.daɪt

erudite

博学的或聪明的
Meaning
Having or showing great knowledge or learning; scholarly and intellectual.
Example
The professor's erudite lecture fascinated the students.
教授的博学讲座让学生们着迷。
B2 adverb /ˌiːkəˈnɒmɪkli/

economically

经济地
Meaning
in a way that relates to economics or is efficient and not wasteful.
Example
The company is trying to operate more economically this year.
公司今年努力以更经济的方式运营。
B1 adjective /ˈel.dər.li/

Elderly

老年人; 年长的; 老年
Meaning
aged; advanced in years; old
Example
The elderly man walked slowly with his cane.
那位年长的男人拿着拐杖慢慢走。
C2 verb /ɪnˈtriːt/

entreat

恳求
Meaning
To ask earnestly or beg someone to do something.
Example
She entreated him to stay a little longer.
她恳求他再待一会儿。
C1 adjective, verb /ɪɡˈzɛmpt/

exempt

免除
Meaning
Free from an obligation or liability imposed on others.
Example
Students with high grades are exempt from the final exam.
成绩优异的学生可以免除期末考试。
B1 noun /ˈempaɪər/

empire

帝国
Meaning
a group of countries or regions controlled by one ruler or government
Example
The Roman Empire lasted for centuries.
罗马帝国延续了几个世纪。
B1 verb /ˈɛdjʊˌkeɪt/

educate

教育
Meaning
to give knowledge, skills, or training to someone; to teach
Example
Parents should educate their children about healthy habits.
父母应该教育他们的孩子关于健康习惯。
C1 noun ˈiː.θɒs

ethos

文化、时代或社区的特征精神
Meaning
The characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations.
Example
The company's ethos is built on innovation and integrity.
公司的文化精神建立在创新和诚信之上。
C2 adjective /ɪˈmɛrɪtəs/

emeritus

荣休教授
Meaning
having retired but allowed to retain their title as an honor
Example
He is a professor emeritus at the university.
他是大学的荣休教授。
C1 verb /ɪɡˈzɔːlt/

exalt

Meaning
to praise highly or raise in rank, honor, or power
Example
The community exalted the teacher for his dedication.
C1 adjective /ˌɛvərˈlæstɪŋ/

everlasting

永恒的
Meaning
Lasting forever or for an indefinitely long time.
Example
The poet wrote about his everlasting love for nature.
诗人写下了他对大自然永恒的爱。
C1 adjective /ˈɜːr.θən/

Earthen

由土或粘土制成; 与陶瓷有关
Meaning
made of earth or clay; relating to pottery or ceramic materials
Example
The kitchen had beautiful earthen pots for storage.
厨房里有美丽的陶土罐用来存储。
C1 verb /ɛmˈbɛzəl/

embezzle

Meaning
to steal or misuse money or property entrusted to one's care
Example
The accountant was arrested for embezzling company funds.
A2 adjective /ɪˈlɛktrɪk/

electric

电的
Meaning
Relating to or operated by electricity.
Example
The room was lit by an electric lamp.
房间里用电灯照明。
A2 noun /ɪksˈtʃeɪndʒ/

Exchange

交换
Meaning
an act of giving one thing and receiving another in return
Example
The exchange of gifts is a common tradition during the holidays.
节日期间互赠礼物是一个常见的传统。
C2 verb /ˈɛksplɪkeɪt/

explicate

解释
Meaning
to make an idea or principle clear by explaining it in detail
Example
The professor tried to explicate the theory of relativity for his students.
教授试图为他的学生解释相对论的理论。
C2 noun /ˈɛpəʊd/

epode

一种抒情诗的形式
Meaning
A form of lyric poem written in couplets, often following a strophe and antistrophe in classical Greek poetry.
Example
The poet concluded his ode with a striking epode.
诗人以一个令人印象深刻的艾波德结束了他的颂歌。
C2 verb /ɪˈstreɪndʒ/

estrange

Meaning
to cause someone to no longer be close or affectionate; to alienate
Example
His constant criticism began to estrange him from his friends.
C2 noun /ˈeb.taɪd/

Ebb-tide

退潮
Meaning
the movement of the tide out to sea; a time when the sea level is falling
Example
During ebb-tide, we could walk further out on the beach.
在退潮期间，我们可以在海滩上走得更远。
C2 noun /ɪˌkliːziˈæstɪk/

ecclesiastic

神职人员
Meaning
A member of the clergy or church official.
Example
The council was attended by several high-ranking ecclesiastics.
理事会由几位高级神职人员参加。
B2 adjective /ɪkˈskluːsɪv/

exclusive

仅限于特定的人、团体或区域；不与他人共享
Meaning
restricted to a particular person, group, or area; not shared with others
Example
The hotel offers exclusive access to a private beach.
酒店提供专属通往私人海滩的通道。
C1 adjective /ˌiːɡoʊˈsentrɪk/

egocentric

自我中心
Meaning
thinking only about yourself and not about others
Example
His egocentric behavior annoyed everyone at the meeting.
他的自我中心行为让会议上的每个人都很不舒服。
C2 noun /ˈɛskwaɪər/

esquire

律师称号
Meaning
A title of respect often used after a man's name, especially for lawyers in the United States.
Example
John Smith, Esquire, will be representing the client in court.
约翰·史密斯，律师称号，将在法庭上代表客户。
C1 verb /ɪnˈtaɪs/

entice

引诱
Meaning
to attract or tempt someone by offering something appealing
Example
The advertisement was designed to entice customers into the store.
广告被设计来吸引顾客进店。
B1 adjective ɪkˈstriːm

extreme

极端
Meaning
Reaching a high or the highest degree; very great.
Example
Extreme weather patterns disrupt ecosystems.
极端的天气模式扰乱了生态系统。
B1 noun ɪɡˈzek.jə.tɪv

executive

执行
Meaning
The branch of government responsible for implementing and enforcing laws.
Example
The executive body enforces policies.
执行机关执行政策。
C2 noun /ˌɛpɪˈdɜːrmɪs/

epidermis

皮肤的外层
Meaning
the outer layer of cells covering the body of an organism, especially the skin
Example
The epidermis protects the body from harmful bacteria.
表皮保护身体免受有害细菌的侵害。
C1 noun /ˈɛstjʊəri/

estuary

河口
Meaning
the tidal mouth of a large river, where the tide meets the stream
Example
The city is located near the estuary of the river.
这座城市位于河口附近。
B2 adjective /ɪkˌsperɪˈmentl/

experimental

实验的
Meaning
based on untested ideas or techniques; relating to experiments or testing
Example
The scientists developed an experimental drug to treat cancer.
科学家们开发了一种实验性药物来治疗癌症。
B2 verb /ɪkˈspaɪər/

expire

到期
Meaning
to come to an end, especially a period of validity or life
Example
My passport will expire next month.
我的护照将在下个月到期。
B2 noun ɪnˌvaɪrənˈmɛntəl ˌdɛɡrəˈdeɪʃən

environmental degradation

环境退化
Meaning
The deterioration of the environment through depletion of resources and destruction of ecosystems.
Example
Environmental degradation threatens biodiversity.
环境退化威胁到生物多样性。
B2 noun ˌiːkəˈlɒdʒɪkəl ˈbæləns

ecological balance

生态平衡
Meaning
A state of dynamic equilibrium within a community of organisms.
Example
Maintaining ecological balance is essential for a sustainable planet.
维持生态平衡对可持续的星球至关重要。
C1 adjective /ɪkˈspiːdiənt/

expedient

权宜之计
Meaning
suitable or convenient for achieving a particular end, sometimes at the expense of morality
Example
It was expedient to take the shortcut despite the risks.
尽管有风险，走捷径是权宜之计。
B1 noun /edʒ/

Edge

边缘; 锋利的边
Meaning
the outside limit of an object or area; a sharp side of a blade
Example
Be careful not to cut yourself on the sharp edge of the knife.
小心不要被刀的锋利边缘割伤。
C1 noun /eb/

Ebb

退潮; 海水下降
Meaning
the receding tide; a gradual decline or reduction
Example
The fishermen waited for the ebb before returning to shore.
渔民们在回到岸边之前等待着退潮。
C2 adjective /ɪkˈsɛpʃənəbl/

exceptionable

不可接受的
Meaning
Open to objection; causing disapproval.
Example
His rude remarks were considered exceptionable by everyone present.
他的粗鲁评论被在场的每个人视为不可接受。
A2 noun ˈen.ə.dʒi

energy

能源
Meaning
Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Example
Clean energy sources help reduce pollution.
清洁能源有助于减少污染。