empower
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B2 verb /ɪmˈpaʊər/

empower

Meaning
To give someone the power or authority to do something; to make someone stronger or more confident.
Example
Education can empower people to improve their lives.
B2 noun /ɪmˈpaʊə.mənt/

empowerment

赋权
Meaning
Authority or power given to someone to do something.
Example
Empowerment initiatives enhance confidence.
赋权举措提升信心。
C1 noun ˈiːkəʊˌsɪstəm ˈsɜːvɪsɪz

ecosystem services

生态系统服务
Meaning
The benefits people obtain from ecosystems.
Example
Forests provide valuable ecosystem services, such as purifying air and water.
森林提供有价值的生态系统服务，如空气和水的净化。
C1 noun/adjective /ɪˈliːtɪst/

elitist

精英主义者
Meaning
A person who believes that a society should be led by an elite; showing preference for a privileged class.
Example
His elitist attitude made him unpopular among his peers.
他的精英主义态度使他在同事中不受欢迎。
C2 adjective /ɛmˈpaɪriəl/

empyreal

天国的
Meaning
Heavenly, divine, or relating to the highest heavens.
Example
The poet described the empyreal beauty of the stars.
诗人描述了星星的天国美丽。
B1 noun /ɪkˈspens/

Expense

费用; 支出;
Meaning
the cost required for something; money spent on something
Example
The travel expense for the business trip was covered by the company.
商务旅行的费用由公司承担。
C1 noun /ˌiː.kwɪˈlɪb.ri.əm/

equilibrium

平衡
Meaning
A state of physical balance or stability in physical, mental, or economic conditions.
Example
The market reached an equilibrium between supply and demand.
市场在供求之间达到了平衡。
C1 adjective /ɛnˌsaɪkləˈpiːdɪk/

encyclopedic

百科全书的
Meaning
Having comprehensive knowledge of many subjects; relating to or characteristic of an encyclopedia.
Example
Her encyclopedic knowledge of history amazed everyone at the conference.
她对历史的百科全书式知识令会议上的所有人都惊讶不已。
C1 noun /ɪkˈspoʊnənt/

exponent

指数
Meaning
a person who supports, promotes, or explains an idea; in math, a symbol denoting power
Example
She is a leading exponent of modern dance.
她是现代舞蹈的领先指数。
C1 verb /ɪnˈθjuːz/

enthuse

激动
Meaning
to express excitement or admiration
Example
She enthused about her trip to Italy.
她对她的意大利之旅充满了热情。
B1 adjective /ɪkˈstrɔːr.dɪ.nər.i/

Extraordinary

非凡的; 卓越的;
Meaning
very unusual; remarkable; going beyond what is normal or expected
Example
The magician's performance was extraordinary and left everyone amazed.
魔术师的表演非常不寻常，令所有人都感到惊讶
C1 noun ˈiː.pɒk

epoch

时代
Meaning
A period of time in history or a person's life, typically one marked by notable events or particular characteristics.
Example
The invention of the internet marked a new epoch in human history.
互联网的发明标志着人类历史的新纪元。
C1 adjective /ɪˈɡriːdʒəs/

egregious

极其严重
Meaning
Outstandingly bad; shocking.
Example
The company was fined for its egregious safety violations.
该公司因其极其严重的安全违规行为而被罚款。
B2 adjective /ɪkˈstræv.ə.ɡənt/

Extravagant

奢华
Meaning
spending much more than is necessary; wasteful; lacking restraint in spending
Example
His extravagant lifestyle included expensive cars and luxury vacations.
他奢华的生活方式包括昂贵的汽车和奢华的度假。
C1 adjective /ɪˈvɒkətɪv/

evocative

唤起的
Meaning
bringing strong images, memories, or feelings to mind
Example
The music was evocative of her childhood memories.
这段音乐唤起了她的童年回忆。
A2 noun /ɪkˈskjuːs/

Excuse

借口
Meaning
a reason or explanation put forward to defend or justify a fault or offense
Example
Being tired is not a valid excuse for not completing your homework.
疲劳不是一个有效的借口，不能完成作业。
A2 noun /ˌen.təˈteɪn.mənt/

Entertainment

娱乐
Meaning
the action of providing or being provided with amusement or enjoyment
Example
The concert provided excellent entertainment for the entire family.
音乐会为全家人提供了极好的娱乐。
C1 adjective ɪˈræt.ɪk

erratic

不规则
Meaning
Unpredictable and inconsistent; not even or regular in pattern or movement.
Example
His erratic behavior confused his colleagues.
他的不规则行为让他的同事们感到困惑。
B2 adjective /ˌɛm.pəˈθɛ.tɪk/

empathetic

富有同理心
Meaning
Showing ability to understand and share feelings of others.
Example
She was empathetic towards her friend's struggles.
她对朋友的挣扎表现出富有同理心。
B2 adjective ɪˈvɒlvɪŋ

evolving

演变的
Meaning
Developing gradually, especially from a simple to a more complex form; changing and developing.
Example
Education plays a role in evolving societal norms.
教育在社会规范的演变中发挥着作用。
C1 noun ɪˈveɪ.ʒən

evasion

逃避
Meaning
The practice of avoiding or escaping from something, especially responsibility or duty.
Example
His evasion of responsibilities frustrated his colleagues.
他逃避责任的行为使同事们感到沮丧。
B2 verb /ɪnˈrɪtʃ/

enrich

丰富
Meaning
To improve or enhance the quality or value of something.
Example
Space exploration enriches human understanding.
太空探索丰富了人类的理解。
B2 verb /ɪmˈbɑːrkɪŋ/

embarking

开始旅行
Meaning
Beginning a journey or enterprise.
Example
The group is embarking on a long journey.
小组正在开始一段长途旅行。
A2 adjective /ˈɛvrideɪ/

everyday

日常
Meaning
common or ordinary; occurring daily
Example
These shoes are perfect for everyday use.
这些鞋子非常适合日常使用。
C1 noun /ˈem.ɪ.nəns/

Eminence

名声; 卓越
Meaning
fame or recognized superiority; high rank or status
Example
The professor achieved eminence in the field of quantum physics.
教授在量子物理学领域获得了名声。
C2 noun /ɪnˈtriːti/

entreaty

恳求
Meaning
An earnest or humble request or plea.
Example
She made an entreaty for peace during the heated argument.
她在激烈的争论中恳求和平。
C1 verb /ɪnˈtrɛntʃ/

entrench

扎根
Meaning
To establish something so firmly that it is difficult to change.
Example
The company entrenched its position in the market through innovation.
公司通过创新巩固了其市场地位。
C1 noun /ˈɜːrθənˌwɛr/

earthenware

陶器
Meaning
pottery made of clay and hardened by heat
Example
The shop displayed beautiful earthenware pots and bowls.
商店展示了美丽的陶器罐和碗。
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 noun /ˌɛks.həˈleɪ.ʃən/

exhalation

呼气
Meaning
The action of breathing out.
Example
Slow exhalation calms the nervous system.
缓慢的呼气使神经系统平静。
B2 adjective ˌɒn.trə.prəˈnɜː.ri.əl

entrepreneurial

企业家精神
Meaning
Relating to or characterized by the activity of setting up a business or businesses, taking on financial risks in the hope of profit.
Example
His entrepreneurial spirit led him to establish a successful startup.
他的企业家精神使他创办了一个成功的创业公司。
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。
B1 verb ɪkˈspændɪd

expanded

扩展
Meaning
Made or become larger or more extensive.
Example
Expanded opportunities in education can transform lives.
教育中的扩展机会可以改变生活。
B1 noun ˈiːˌkɒm.ɜːrs

e-commerce

电子商务
Meaning
The process of buying and selling goods or services through the internet.
Example
E-commerce has revolutionized the way people shop.
电子商务彻底改变了人们购物的方式。
B2 adjective /ɪnˈvaɪrənmənt ˈfrɛndli/

environment-friendly

环保
Meaning
Designed or produced in a way that causes minimal harm to the environment, often using sustainable materials and processes that reduce ecological impact.
Example
Environment-friendly products are designed to reduce ecological damage.
环保产品旨在减少生态损害。
B2 verb /ɪˈvɑːlv/

evolve

Meaning
to develop gradually, especially into a more complex or advanced state
Example
Over time, the company evolved into a global brand.
C2 verb /ɪnˈskɒns/

ensconce

安顿, 隐藏
Meaning
to settle comfortably or securely in a place; to hide or shelter firmly
Example
She ensconced herself in a cozy armchair by the fireplace.
她坐在壁炉旁的一张舒适椅子上。
C2 noun /eɪˈklɑː/

eclat

巨大成功
Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
艺术家的首次演出获得了巨大的成功。
B1 noun ɪɡˌzæm.ɪˈneɪ.ʃənz

examinations

考试
Meaning
A detailed inspection or investigation; a formal test of a person's knowledge or proficiency.
Example
BPSC conducts rigorous examinations.
BPSC 进行严格的考试。
B2 adverb /ɪkˈskluːsɪvli/

exclusively

专门
Meaning
only; not shared with others
Example
This service is available exclusively to premium members.
此服务仅限于高级会员。
A2 noun /ɪˌlɛkˈtrɪsɪti/

electricity

电力
Meaning
A form of energy resulting from the existence of charged particles.
Example
The storm caused a power cut and we had no electricity.
风暴导致了停电，我们没有电力。
C1 noun /ɪˌlæbəˈreɪʃən/

elaboration

阐述 / 详细说明
Meaning
the process of adding more detail or expanding on something
Example
The teacher appreciated the student's elaboration of the topic.
老师欣赏了学生对主题的详细阐述。
C1 noun /ˈiːɡoʊɪst/

egoist

利己主义者
Meaning
A person who is excessively concerned with themselves; someone who believes in or practices egoism.
Example
She avoided him because he was a selfish egoist.
她避开他，因为他是一个自私的利己主义者。
C1 noun /ˈɛpɪˌlɔːɡ/

epilogue

结语
Meaning
A section at the end of a book, play, or speech that serves as a conclusion.
Example
The author included an epilogue to explain what happened to the characters later.
作者添加了结语，以解释后来的角色发生了什么。
C2 verb /ɪˈvɪsəˌreɪt/

eviscerate

取出内脏，摧毁
Meaning
to remove the internal organs of; to deprive of essential content
Example
The critics eviscerated the movie for its weak storyline.
评论家因为电影的弱剧情而摧毁了电影。
B1 adjective /ɪkˈstendɪd/

extended

扩展的
Meaning
longer or larger than usual; continuing for a longer time
Example
They took an extended vacation in Europe this summer.
他们这个夏天在欧洲度过了一个扩展的假期。
C1 noun /ˈɛksələnsɪ/

excellency

阁下
Meaning
a title of honor for people of high rank, especially ambassadors or governors
Example
His Excellency the Ambassador attended the ceremony.
阁下大使参加了仪式。
C2 noun /ˌɛmjʊˈleɪ.ʃən/

emulation

仿真
Meaning
Reproducing something or following someone to achieve success.
Example
The software allows the emulation of old video games on modern devices.
该软件允许在现代设备上模拟旧视频游戏。
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。
C1 adjective /ɪˈluːsɪv/

elusive

难以捉摸
Meaning
Difficult to find, catch, or achieve; hard to understand or define.
Example
The solution to the problem proved elusive.
问题的解决方案证明难以捉摸。
C2 verb /ɪkˈstɛnjueɪt/

extenuate

减轻
Meaning
to make an offense, fault, or situation seem less serious by providing an excuse or explanation
Example
The lawyer tried to extenuate his client's actions by highlighting his difficult childhood.
律师通过强调客户的艰难童年，试图减轻他的行为。
C2 noun /ˌɛpɪˈsaɪklɔɪd/

epicycloid

外摆线
Meaning
a curve traced by a point on the circumference of a circle that rolls around the outside of another circle
Example
The mathematician demonstrated how to draw an epicycloid.
数学家演示了如何绘制外摆线。
C1 verb ɪˈræd.ɪ.keɪt

eradicate

根除
Meaning
To destroy completely; to put an end to something undesirable.
Example
Vaccination programs help eradicate infectious diseases.
疫苗接种计划帮助根除传染性疾病。
C2 noun /ˈiːɡres/

egress

出口
Meaning
The action of going out or leaving a place; an exit.
Example
The emergency door provided an egress for the trapped workers.
紧急出口为被困的工人提供了一个出口。
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 noun /ɪˈklɪps/

Eclipse

日蚀 (太阳或月亮)
Meaning
an obscuring of light from one celestial body by another; a decline or loss
Example
The total solar eclipse darkened the sky for several minutes.
完全的太阳日食让天空暗了好几分钟。
B2 noun ˈiːkoʊˌtʊrɪzəm

Eco-tourism

生态旅游
Meaning
A form of tourism involving responsible travel to natural areas that conserves the environment and improves the well-being of local people.
Example
Eco-tourism promotes responsible travel to natural areas.
生态旅游促进了负责任的自然地区旅游。
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 noun ɪˌræd.ɪˈkeɪ.ʃən

eradication

根除
Meaning
The complete destruction or elimination of something unwanted.
Example
Carbon eradication is a key goal of the project.
碳的根除是该项目的一个关键目标。
C2 noun /ˈɛpəlɛt/

epaulette

肩章
Meaning
A variant spelling of epaulet, also meaning a shoulder ornament, especially on military uniforms.
Example
The officer’s epaulette shone brightly under the sunlight.
军官的肩章在阳光下闪闪发光。
C1 adjective /ˈevər ˈlæstɪŋ/

Ever-lasting

永恒的; 持久的;
Meaning
eternal; permanent; enduring forever
Example
Their love is ever-lasting and will never fade.
他们的爱是永恒的，永不褪色。
C2 noun /ˈɛkwɪpɔɪz/

equipoise

平衡
Meaning
A state of balance or equilibrium.
Example
Her calmness created an equipoise in the heated debate.
她的冷静在激烈的辩论中创造了平衡。
C1 verb /ɪnˈkrəʊtʃ/

encroach

幸福
Meaning
to gradually take over or intrude on someone’s rights, territory, or space
Example
The buildings began to encroach on the protected forest land.
当她获得奖项时，她无法掩饰自己的幸福。
C1 verb /ɪmˈboʊl.dən/

embolden

激励
Meaning
To give someone the courage or confidence to do something.
Example
The coach's words emboldened the team to play aggressively.
教练的话激励了队伍去积极地比赛。
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。
B2 noun /ˈek.oʊ/

Echo

回声; 回响
Meaning
a sound that is reflected back; a repetition or imitation
Example
His voice created a clear echo in the empty cathedral.
他的声音在空荡的教堂里产生了清晰的回声。
C2 verb /ɪkˈstɛmpəraɪz/

extemporize

即兴表演
Meaning
To speak or perform without preparation; improvise.
Example
The actor had to extemporize when he forgot his lines.
当演员忘记台词时，他不得不即兴表演。
C2 noun /ˌɛksaɪˈteɪʃən/

excitation

兴奋
Meaning
a state of great excitement or the process of stimulating activity
Example
The news created great excitation among the fans.
这条新闻在球迷中引起了极大的兴奋。
C1 adjective /ɪˈfɛm.ər.əl/

ephemeral

短暂
Meaning
Lasting for a very short time; temporary or transitory.
Example
The beauty of cherry blossoms is ephemeral.
樱花的美丽是短暂的。
C1 adjective /ɪɡˈzæspəˌreɪtɪd/

exasperated

非常恼火
Meaning
greatly annoyed or irritated
Example
She gave him an exasperated look after his repeated mistakes.
在他的重复错误后，她给了他一个非常恼火的眼神。
B2 verb, adjective /ɪˈlæbəreɪt/ (verb), /ɪˈlæbərət/ (adjective)

elaborate

详细说明 / 设计复杂的
Meaning
verb: to explain something in detail; adjective: detailed and complicated in design
Example
She asked him to elaborate on his proposal.
她要求他详细说明他的提议。
B2 noun ɪˈmɪʃ.ən

emission

排放
Meaning
The release or discharge of gases, particles, or other substances into the environment.
Example
Car manufacturers are reducing carbon emissions.
汽车制造商正在减少碳排放。
C1 adjective /ɪˈnæmərd/

enamored

着迷
Meaning
filled with love or admiration
Example
He became enamored with classical music after attending the concert.
他在参加音乐会后爱上了古典音乐。
C1 adjective ɪˈroʊ.ni.əs

erroneous

错误的， 不正确的
Meaning
Wrong; incorrect.
Example
His assumptions were completely erroneous.
他的假设完全是错误的。
C1 noun /ˈek.stə.si/

Ecstasy

极乐
Meaning
an overwhelming feeling of great happiness or joyful excitement
Example
She was in complete ecstasy when she heard the good news.
她听到好消息时完全陷入了极乐。
C2 noun /ˈɛpəlɛt/

epaulet

肩章
Meaning
An ornamental shoulder piece on a garment, especially on the coat or jacket of a military uniform.
Example
The general’s uniform had a golden epaulet on each shoulder.
将军的制服上每只肩膀上都有一个金色的肩章。
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 /ɪˈveɪd/

evade

回避
Meaning
To escape or avoid something, especially by cleverness or trickery.
Example
He tried to evade the question by changing the subject.
他通过换话题来回避问题。
A1 pronoun /ˈɛvrɪwʌn/

everyone

每个人
Meaning
every person; all people
Example
Everyone must bring their own lunch.
每个人都必须带自己的午餐。
A1 adjective /ˈiːzi/

easy

简单
Meaning
not difficult; requiring little effort
Example
The exam was surprisingly easy.
考试出乎意料的简单。
A2 noun /ɪˈkwɪpmənt/

equipment

设备
Meaning
the necessary tools, machines, or other items needed for a particular purpose
Example
The laboratory bought new equipment for research.
实验室购买了新的设备用于研究。
B2 adjective /ˈiːtəbl̩/

eatable

可食用
Meaning
suitable or safe for eating
Example
The berries are not only eatable but also quite tasty.
这些浆果不仅可食用，而且味道相当好。
C1 noun /ˈɛf.ɪ.kə.si/

efficacy

效能
Meaning
The ability to produce a desired or intended result; effectiveness.
Example
The efficacy of the vaccine has been proven in trials.
疫苗的效能在试验中得到了证明。
C1 noun /ˈɛspiənɑːʒ/

espionage

间谍活动
Meaning
The practice of spying or using spies to gather secret information, usually for political or military purposes.
Example
The agent was arrested on charges of espionage against the state.
该特工因涉嫌间谍活动被逮捕。
C2 adjective /ˌɛf.ɪˈkeɪ.ʃəs/

efficacious

有效的
Meaning
Successful in producing a desired or intended result; effective.
Example
The vaccine proved highly efficacious in preventing infections.
疫苗在预防感染方面证明是非常有效的。
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。
B2 verb /ɪmˈbreɪs/

embrace

拥抱
Meaning
to hold someone closely in your arms; to accept willingly
Example
She embraced her friend at the airport.
她在机场拥抱了她的朋友。
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。
C1 adjective /ˈɜːrθ.li/

Earthly

尘世的; 物质的; 世界的
Meaning
relating to the earth or human life; worldly; material rather than spiritual
Example
He focused on earthly pleasures rather than spiritual growth.
他专注于尘世的乐趣，而不是精神上的成长。
B1 verb /ɪkˈspɪəriənsɪŋ/

experiencing

经历
Meaning
Encountering or undergoing an event or occurrence.
Example
The travelers are experiencing the thrill of adventure.
旅行者正在体验冒险的刺激。
C1 verb /ɪˈloʊp/

elope

偷偷结婚
Meaning
to run away secretly in order to get married, especially without parental consent
Example
The young couple decided to elope to another city.
这对年轻情侣决定逃到另一个城市结婚。
A2 abbreviation /ɛtˈsɛtərə/

etc

等等
Meaning
Used to indicate additional, similar items in a list that are not mentioned.
Example
The shop sells fruits, vegetables, dairy, etc.
商店出售水果、蔬菜、乳制品等等。
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 verb /ɪɡˈzɜrt/

exert

施加
Meaning
to apply or bring to bear; to use physical or mental effort
Example
He exerted all his strength to lift the heavy box.
他全力以赴抬起沉重的箱子。
A2 adjective /ˈeksələnt/

Excellent

卓越的；出色的；优秀的；
Meaning
extremely good; outstanding; superior
Example
She received excellent grades in all her subjects.
她在所有科目中都得到了优秀的成绩。
C1 adjective /ɪɡˈzɪləreɪtɪŋ/

exhilarating

令人振奋的
Meaning
Making someone feel very excited, happy, or thrilled.
Example
Skydiving was the most exhilarating experience of his life.
跳伞是他一生中最令人振奋的经历。
C1 adjective /ˈen.vi.əs/

Envious

嫉妒的; 羡慕的
Meaning
feeling or showing envy; jealous
Example
She felt envious of her friend's new car.
她对朋友的新车感到嫉妒。
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。
C1 verb /ɪkˈstræpəleɪtɪŋ/

extrapolating

推断
Meaning
Extend the application of (a method or conclusion) to an unknown situation by assuming that existing trends will continue.
Example
Extrapolating from the current data, we can estimate the trends for next year.
根据当前数据进行推断，我们可以预测明年的趋势。
A1 adjective /eɪtθ/

eighth

第八
Meaning
coming after the seventh position in a sequence; one of eight equal parts
Example
She finished in eighth place in the race.
她在比赛中获得了第八名。
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。
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。
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。
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.
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。
C2 verb /ɪnˈvaɪərən/

environ

环绕
Meaning
to surround or enclose; to encircle
Example
Mountains environ the small valley.
山脉环绕着小山谷。
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。
A2 adverb /ˈiːkwəli/

equally

平等地
Meaning
in an equal or fair way; to the same degree
Example
The prize money was equally divided among the winners.
奖金在获胜者之间平等分配。
C1 noun /ɪˈvæp.ər.ə.tɪv ˈkuː.lər/

Evaporative cooler

蒸发冷却器
Meaning
a cooling device that uses water evaporation to reduce air temperature
Example
The evaporative cooler works best in dry climates.
蒸发冷却器在干燥的气候中效果最好。
C1 noun /ɛnˈdɔːr.fɪnz/

endorphins

内啡肽
Meaning
Chemical compounds produced by the brain that reduce pain and create feelings of happiness.
Example
Exercise releases endorphins, reducing stress and pain.
锻炼释放内啡肽，减轻压力和疼痛。
A2 verb /ɪkˈspleɪn/

explain

解释
Meaning
to make something clear or easy to understand by describing it in more detail
Example
The teacher explained the difficult concept to the students.
老师向学生们解释了这个困难的概念。
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。
C2 verb /ɛnˈfiːbəl/

enfeeble

削弱
Meaning
To make weak or feeble; to deprive of strength.
Example
The long illness enfeebled the old man.
长期的疾病使老人虚弱。
B2 noun /ˈɛdʒuˌkeɪtər/

educator

教育工作者
Meaning
a person who provides education; a teacher or instructor
Example
She is a dedicated educator who inspires her students every day.
她是一位献身的教育工作者，每天都在激励她的学生。
C2 noun /ɪˈlɛk.trə.taɪp/

electrotype

电铸版
Meaning
A duplicate printing plate made by electroplating a mold of the original.
Example
The printer used an electrotype to produce multiple copies of the page.
打印机使用了电铸版来制作页面的多个副本。
B1 noun /ˈɛldər/

elder

长者
Meaning
a person who is older or has higher rank; an older person in a family or community
Example
We should always respect our elders.
我们应该永远尊敬我们的长辈。
B1 adverb /ɛtˈsɛtərə/

etcetera

等等
Meaning
used at the end of a list to indicate that other similar items are included
Example
She bought apples, oranges, bananas, etcetera from the market.
她从市场买了苹果、橙子、香蕉等等。
B1 verb /ɪmˈplɔɪ/

employ

雇佣
Meaning
to hire someone to do a job; to use something effectively
Example
The company plans to employ more engineers next year.
公司计划明年雇用更多的工程师。
C2 adjective /ˈɪrˌsplɪtɪŋ/

earsplitting

震耳欲聋
Meaning
extremely loud or piercing sound
Example
The earsplitting noise of the fire alarm startled everyone.
火灾警报的震耳欲聋的声音让每个人都吓了一跳。
B2 verb /ɛksˈheɪl/

exhale

呼气
Meaning
to breathe out air from the lungs
Example
She slowly exhaled after holding her breath.
她屏住呼吸后慢慢地呼气。
B2 adjective /ɪkˈsɛntrɪk/

eccentric

古怪的
Meaning
unconventional and slightly strange in behavior or appearance
Example
The artist was known for his eccentric style.
艺术家以其古怪的风格而闻名。