Dagger
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C1 noun /ˈdæɡ.ər/

Dagger

匕首
Meaning
a short knife with a pointed blade used as a weapon
Example
The ancient warrior carried a silver dagger.
古代战士携带着一把银色匕首。
C1 verb /ˈdiːmɑːrˌkeɪt/

demarcate

划定
Meaning
to set the boundaries or limits of something
Example
The land was demarcated with fences to avoid disputes.
土地被围栏划定以避免争议。
C1 noun /dɪˈsiːt/

Deceit

欺骗; 欺诈; 谎言
Meaning
the action or practice of deceiving someone by concealing or misrepresenting the truth
Example
His deceit was discovered when the truth about his qualifications came to light.
当关于他资历的真相浮出水面时，他的欺骗行为被揭露了。
C1 noun ˌdɪs.ɪnˈfek.ʃən

disinfection

消毒
Meaning
The process of destroying harmful microorganisms to prevent infection.
Example
Kitchen appliances require frequent disinfection.
厨房电器需要频繁消毒。
C1 noun /ˈdɑːrwɪnɪzəm/

darwinism

达尔文主义
Meaning
the theory of biological evolution developed by Charles Darwin, emphasizing natural selection
Example
Darwinism revolutionized the way scientists understood the origin of species.
达尔文主义彻底改变了科学家们对物种起源的理解。
C1 adjective /ˈdjuːtɪfəl/

Dutiful

尽职的；尊敬的；顺从的
Meaning
conscientiously fulfilling one's duty; obedient; respectful
Example
She is a dutiful daughter who always helps her parents.
她是一个尽职的女儿，总是帮助她的父母。
C1 verb /dɪˈsɛkt/

dissect

Meaning
to cut apart an animal, plant, or other organism to study its internal parts; to analyze something in detail
Example
In biology class, students had to dissect a frog to learn about its anatomy.
C1 verb /dɪˈpliːt/

deplete

耗尽
Meaning
to reduce the quantity or supply of something
Example
The long war has depleted the country's resources.
长时间的战争已经耗尽了该国的资源。
C1 noun /ˌdiː.mɑːˈkeɪ.ʃən/

Demarcation

划界
Meaning
the action of fixing the boundary or limits of something; separation or division
Example
The demarcation between public and private land was clearly marked.
公共和私人土地之间的划界已被明确标记。
C1 noun /ˈdɪŋɡi/

dinghy

小艇
Meaning
a small boat, often carried or towed by a larger vessel, used for short trips or as a lifeboat
Example
They rowed the dinghy back to the yacht.
他们划着小艇回到游艇。
C1 noun /ˈdjuːplɛks/

duplex

双拼房
Meaning
A house or apartment divided into two separate residences.
Example
They live in a duplex near the city center.
他们住在市中心附近的一座双拼房里。
C1 verb /dɪsˈpruːv/

disprove

反驳
Meaning
to show that something is false or wrong
Example
The scientist worked hard to disprove the old theory.
科学家努力工作以反驳旧理论。
C1 noun /dɜːrθ/

dearth

匮乏
Meaning
A scarcity or lack of something.
Example
There was a dearth of food during the famine.
在饥荒期间，食物短缺。
C1 noun /ˌdev.əˈtiː/

Devotee

信徒; 崇拜者
Meaning
a person who is very interested in and enthusiastic about someone or something
Example
As a devotee of classical music, she attended every concert in the city.
作为古典音乐的信徒，她参加了城市中的每一场音乐会。
C1 verb /dəˈmɛstɪkeɪt/

domesticate

驯化
Meaning
to tame an animal for use by humans; to adapt something for domestic use
Example
Humans domesticated dogs thousands of years ago.
人类几千年前驯化了狗。
C1 noun /ˌdiː.viˈeɪ.ʃən/

Deviation

偏差；偏离既定路线
Meaning
the action of departing from an established course; a departure from usual standards
Example
Any deviation from the established procedure must be reported immediately.
任何偏离既定程序的行为都必须立即报告。
C1 verb /dɪˈbeɪs/

debase

贬低
Meaning
to reduce the quality, value, or dignity of something
Example
Corruption can debase the values of a society.
腐败可能贬低社会的价值观。
C1 noun /ˌdep.rɪˈveɪ.ʃən/

deprivation

剥夺，缺乏，匮乏
Meaning
The damaging lack of material benefits considered to be basic necessities in a society.
Example
Sleep deprivation affects cognitive function.
睡眠不足影响认知功能。
C1 noun /diːˌtɒksɪfɪˈkeɪʃən/

detoxification

排毒
Meaning
The process of removing toxic substances from a living organism.
Example
Detoxification helps to cleanse the body of harmful substances.
排毒有助于清洁身体中的有害物质。
C1 adjective /dɪˈspɪkəbl/

despicable

卑劣
Meaning
Deserving hatred and contempt; vile or shameful.
Example
His despicable actions shocked the entire community.
他卑劣的行为震惊了整个社区。
C1 adjective /dɪˈplɔːrəbl/

deplorable

可鄙的
Meaning
deserving strong condemnation; shockingly bad in quality
Example
The refugees were living in deplorable conditions.
难民们生活在可鄙的条件下。
C1 verb /dɪˈraɪd/

deride

嘲笑
Meaning
to mock or ridicule someone or something
Example
The critics derided the new movie for its poor script.
评论家嘲笑了这部新电影，因其糟糕的剧本。
C1 noun /diːˈkrɪp.ʃən/

decryption

解密
Meaning
The process of converting encrypted data back into its original form so it can be understood.
Example
Hackers attempted decryption of classified data.
黑客试图解密机密数据。
C1 noun /dɪˈskrep.ən.si/

discrepancy

差异, 不一致, 矛盾
Meaning
A lack of compatibility or similarity between two or more facts.
Example
The audit revealed a discrepancy between the reported earnings and actual income.
审计揭示了报告的收入与实际收入之间的差异。
C1 adjective /ˈdɔːr.mənt/

Dormant

不活跃; 睡着的; 暂时挂起的; 当前不活跃
Meaning
inactive; sleeping; temporarily suspended; not currently active
Example
The volcano has been dormant for over a century.
火山已经休眠了一个多世纪。
C1 noun/verb /dɪsˈkwaɪət/

disquiet

Meaning
A feeling of worry or unease; to make someone feel anxious or uneasy.
Example
The strange silence filled the room with disquiet.
C1 noun ˌdɪdʒɪˈnɛəreɪʃən

degeneration

退化
Meaning
The process of decline or deterioration in structure or function.
Example
The degeneration of brain cells leads to cognitive decline.
大脑细胞的退化导致认知能力下降。
C1 noun /dɪˌsem.ɪˈneɪ.ʃən/

dissemination

传播
Meaning
The action or fact of spreading something, especially information, widely.
Example
The dissemination of false information is a major issue.
错误信息的传播是一个严重问题。
C1 noun dɪˈdʒɛnəˌreɪtɪv dɪˈzizɪz

degenerative diseases

退行性疾病
Meaning
Medical conditions that involve the deterioration or progressive decline of tissues, organs, or functions
Example
Degenerative diseases are common in an aging population.
退行性疾病在老龄化人口中很常见。
C1 noun /ˌdiːˈmer.ɪt/

Demerit

过错; 缺点; 由于过错或违法行为而给出的标记
Meaning
a fault or disadvantage; a mark given for a fault or offense
Example
The student received a demerit for arriving late to class repeatedly.
学生因为多次迟到而得到了一个德梅里特。
C1 verb /dɪsˈoʊn/

disown

放弃关系
Meaning
to refuse to acknowledge or accept responsibility for someone or something
Example
He decided to disown his reckless brother.
他决定与他的鲁莽兄弟断绝关系。
C1 noun /dɪˈkriː/

Decree

法令
Meaning
an official order issued by a legal authority; a judicial decision or edict
Example
The king issued a decree that all citizens must pay additional taxes.
国王发布了一个法令，要求所有公民支付额外税款。
C1 adjective /drəˈkoʊniən/

draconian

龙般的
Meaning
Extremely harsh and severe, especially laws or rules.
Example
The new regulations were criticized as draconian.
新的规定被批评为龙般的。
C1 noun /ˌdɒmɪˈneɪʃən/

domination

统治
Meaning
the exercise of control or influence over someone or something
Example
The empire sought domination over its neighbors.
帝国寻求对其邻国的统治。
C1 noun /dɪˈluːʒən/

delusion

错觉
Meaning
A false belief or impression maintained despite being contradicted by reality.
Example
He lived under the delusion that he was invincible.
他生活在他自己是不可战胜的错觉中。
C1 adjective /ˈdesələt/

Desolate

荒凉; 孤独; 不毛
Meaning
deserted; lonely; barren
Example
The abandoned village looked desolate and empty.
废弃的村庄看起来荒凉且空荡。
C1 noun /ˈdɛdlɒk/

deadlock

僵局
Meaning
a situation in which progress is impossible because of disagreement
Example
Negotiations reached a deadlock after neither side agreed to compromise.
谈判在双方都未同意妥协后陷入了僵局。
C1 verb dɪˈsaɪ.fɚ

decipher

解密, 解读, 翻译
Meaning
To convert something written in code into normal language; to succeed in understanding the meaning of something.
Example
It took hours to decipher the ancient script.
花了几个小时解密这段古老的文字。
C1 noun /ˌdɜːrməˈtɑːlədʒɪst/

dermatologist

皮肤科医生
Meaning
A doctor who specializes in the treatment of skin diseases.
Example
She consulted a dermatologist for her skin allergy.
她因皮肤过敏去咨询了皮肤科医生。
C1 adjective /dɪˈskriːt/

discrete

离散的
Meaning
individually separate and distinct
Example
The course is divided into three discrete modules.
该课程被划分为三个离散模块。
C1 adjective /dɪˈlɪriəs/

delirious

得利瑞厄斯
Meaning
in an extremely disturbed or excited state of mind, often due to illness or emotion
Example
He was delirious with fever and kept muttering nonsense.
他因发烧而神志不清，一直在嘟囔胡话。
C1 verb /ˈdæŋɡəl/

dangle

悬挂
Meaning
to hang loosely or swing freely
Example
The keys dangled from his belt.
钥匙从他的腰带上悬挂。
C1 noun dɪˈtɜː.mɪ.nənt

determinant

决定性因素
Meaning
A factor that decisively affects the nature or outcome of something.
Example
Education is a key determinant of success.
教育是成功的一个关键决定性因素。
C1 noun /ˈdrʌdʒəri/

drudgery

艰苦而单调的工作
Meaning
Hard, menial, or dull work.
Example
She wanted to escape the drudgery of her daily routine.
她想逃离她日常生活的单调工作。
C1 noun /dɪˈprɛsənt/

depressant

抑制剂
Meaning
A drug that reduces functional or nervous activity in the body.
Example
Alcohol acts as a depressant on the central nervous system.
酒精在中枢神经系统中作为抑制剂发挥作用。
C1 noun /dɪˈvɪnɪti/

divinity

神性
Meaning
The quality or state of being divine; a deity.
Example
The priest spoke about the divinity of the soul.
神父谈到了灵魂的神性。
C1 noun dɪˌlɪb.əˈreɪ.ʃən

deliberation

深思熟虑
Meaning
Long and careful consideration or discussion.
Example
The agreement was finalized after much deliberation.
协议在经过长时间的深思熟虑后最终确定。
C1 noun /dɪˈvaɪzər/

divisor

除数
Meaning
A number by which another number is divided.
Example
In the equation 12 ÷ 3, the number 3 is the divisor.
在方程式12 ÷ 3中，数字3是除数。
C1 noun /ˌdaɪəˈrɑːmə/

diorama

立体模型
Meaning
a three-dimensional model representing a scene, often with miniature figures
Example
The museum displayed a diorama of an ancient village.
博物馆展示了一个古代村庄的立体模型。
C1 noun /ˈdrɛsˌmeɪkər/

dressmaker

女裁缝
Meaning
A person who makes or alters women's clothing professionally.
Example
The dressmaker crafted a beautiful gown for the bride.
女裁缝为新娘制作了一件漂亮的礼服。
C1 verb /dɪˈmiːn/

demean

贬低
Meaning
to cause someone to lose dignity or respect
Example
The manager demeaned his employees with rude remarks.
经理用粗鲁的言辞贬低了他的员工。
C1 adjective /dɪˈmɒnstrətɪv/

demonstrative

表现的
Meaning
openly showing feelings, especially affection or emotion
Example
She was very demonstrative with her affection towards her friends.
她对朋友们的爱意非常表现出来。
C1 noun /dʌsk/

Dusk

黄昏; 傍晚
Meaning
the period of the day when daylight is fading; twilight
Example
They walked along the beach during dusk, watching the sunset.
他们在黄昏时分在海滩上走，观看日落。
C1 adjective /dɪsˈpæʃənət/

dispassionate

冷静的
Meaning
not influenced by strong emotion; impartial
Example
The judge remained dispassionate throughout the trial.
法官在整个审判过程中保持冷静。
C1 noun /dɪˈmaɪz/

demise

死亡 / 结束
Meaning
Death or end of something, especially the end of an institution or system.
Example
The sudden demise of the company shocked investors.
公司突如其来的倒闭震惊了投资者。
C1 noun /ˌdɪs.kʌl.əˈreɪ.ʃən/

discoloration

褪色
Meaning
The process of changing or losing color; fading.
Example
Sun exposure causes discoloration of fabrics.
阳光暴露导致织物褪色。
C1 noun ˌdɪm.ɪˈnjuː.ʃən

diminution

减少
Meaning
A reduction in the size, extent, or importance of something; decrease.
Example
There has been a diminution in air pollution.
空气污染减少了。
C1 verb /ˌdɪsɪnˈtæŋɡl/

disentangle

解开
Meaning
To free something or someone from a tangle or complication.
Example
She tried to disentangle her hair from the branches.
她试图把头发从树枝上解开。
C1 noun /dɪˌlɪb.əˈreɪ.ʃənz/

deliberations

审议
Meaning
Careful consideration and discussion before making decisions.
Example
Deliberations on sustainability continued for hours.
关于可持续性的审议持续了几个小时。
C1 noun /ˌdɪsəˈluːʃən/

dissolution

解散
Meaning
the act of formally ending or breaking apart something, such as an organization or marriage
Example
The dissolution of the company was announced yesterday.
公司解散的消息昨天公布。
C1 adjective /dɪˈfaɪənt/

Defiant

挑衅的; 不服从的
Meaning
boldly resistant or challenging; disobedient
Example
The defiant student refused to follow the rules.
那个挑战性的学生拒绝遵守规则。
C1 noun /ˈdɪs.ə.nəns/

dissonance

不和谐
Meaning
Disagreement, lack of harmony, conflict between ideas or beliefs.
Example
The cultural dissonance created misunderstandings.
文化不和谐造成了误解。
C1 adjective /dɪsˈhɑːrtənd/

Disheartened

沮丧
Meaning
discouraged; feeling dejected; losing hope or confidence
Example
She felt disheartened after failing the exam twice.
她在两次未能通过考试后感到沮丧。
C1 verb /dɪˈspɛns/

dispense

分配
Meaning
To distribute or provide something, especially in portions.
Example
The machine dispenses clean drinking water.
机器分配干净的饮用水。
C1 verb /dɪsˈkleɪm/

disclaim

否认
Meaning
to deny responsibility or connection with something
Example
The company disclaimed responsibility for the accident.
公司否认对此事故负责。
C1 noun /draɪ fɪʃ/

Dry fish

干鱼
Meaning
fish that has been preserved by drying in the sun or by other dehydration methods
Example
Dry fish is a popular preserved food in many coastal regions.
干鱼是在许多沿海地区受欢迎的腌制食品。
C1 adjective /dɪsˈkwaɪətɪŋ/

disquieting

令人不安
Meaning
Causing worry, unease, or anxiety.
Example
The news report was deeply disquieting to the public.
新闻报道对公众来说是深感不安的。
C1 noun /dɪˈfɪʃ.ən.si/

Deficiency

缺乏; 不足; 不够
Meaning
a lack or shortage of something; inadequacy or insufficiency
Example
The doctor diagnosed a vitamin D deficiency in the patient's blood test.
医生在患者的血液测试中诊断出维生素D缺乏。
C1 noun /ˈdræm.ə.tɪst/

dramatist

剧作家
Meaning
a person who writes plays
Example
Shakespeare is one of the greatest dramatists in history.
莎士比亚是历史上最伟大的剧作家之一。
C1 noun /ˈdɒɡmə/

dogma

教条
Meaning
A principle or set of principles laid down by an authority as incontrovertibly true.
Example
The religious leader strictly adhered to traditional dogma.
宗教领袖严格遵守传统的教条。
C1 adjective /ˈdɪs.ə.plɪ.ner.i/

Disciplinary

纪律的
Meaning
relating to discipline; intended to correct behavior
Example
The company took disciplinary action against the employee.
公司对员工采取了纪律处分措施。
C1 adjective /ˈdeɪnti/

dainty

精致而美丽
Meaning
Delicately small, pretty, and often considered elegant.
Example
She wore a dainty necklace made of pearls.
她戴着一条由珍珠做的精致项链。
C1 verb /dɪˈmɔrəˌlaɪz/

demoralize

Meaning
to cause someone to lose confidence or hope
Example
The constant criticism demoralized the young athlete.
C1 noun dɪˈfleɪʃən

deflation

通货紧缩
Meaning
Reduction of the general level of prices in an economy.
Example
Deflation often leads to decreased consumer spending.
通货紧缩往往导致消费者支出减少。
C1 verb /dɪˈsɛm.ɪ.neɪt/

disseminate

传播
Meaning
To spread or give out something, especially news, information, ideas, etc., to a lot of people.
Example
Social media helps to disseminate information quickly.
社交媒体帮助迅速传播信息。
C1 noun /dɪˈrɪʒən/

derision

嘲笑
Meaning
Contemptuous ridicule or mockery.
Example
His ideas were greeted with derision by the audience.
他的观点被观众嘲笑了。
C1 verb /ˈdrɪbəl/

dribble

Meaning
to let liquid flow slowly in drops or to move a ball skillfully with repeated small kicks or bounces
Example
The baby dribbled milk on his shirt.
C1 verb /ˌdɪsɪmˈbɑːrk/

disembark

下船/下飞机
Meaning
To leave a ship, aircraft, or other vehicle.
Example
The passengers disembarked from the plane after landing.
乘客在着陆后从飞机上下来。
C1 verb diːˈsɛn.sɪ.taɪz

desensitize

脱敏
Meaning
To make someone less sensitive or reactive to something through repeated exposure.
Example
Constant exposure to violence can desensitize people.
持续的暴力暴露可能会使人们麻木。
C1 adjective ˈdɔːn.tɪŋ

daunting

令人生畏或具有挑战性的
Meaning
Something that seems intimidating or challenging.
Example
The task seemed daunting, but she completed it successfully.
任务看起来令人害怕，但她成功地完成了它。
C1 verb /dɪsˈlɒdʒ/

dislodge

赶走
Meaning
To remove or force out from a position, especially one that is fixed or hard to move.
Example
The troops dislodged the enemy from the hill.
部队把敌人从山丘上赶了下去。
C1 noun /ˌdiː.kɒmpəˈzɪʃən/

decomposition

分解
Meaning
the process of decaying or breaking down into simpler parts
Example
The decomposition of leaves enriches the soil.
叶子的分解使土壤更加肥沃。
C1 verb /dɪˈluːd/

delude

欺骗
Meaning
To mislead someone into believing something that is not true.
Example
He deluded himself into thinking he could win the race without training.
他欺骗自己认为自己可以不训练就赢得比赛。
C1 noun daɪˈkɒtəmi

dichotomy

二分法
Meaning
A division or contrast between two things that are or are represented as being opposed or entirely different.
Example
The dichotomy between tradition and modernity is often debated.
传统与现代之间的二分法常常被讨论。
C1 adjective /dɪˈrɒɡətɔːri/

derogatory

贬低的
Meaning
Showing a critical or disrespectful attitude.
Example
The article contained derogatory comments about the politician.
文章包含了对政治家的贬低评论。
C1 verb /ˈduːdəl/

doodle

Meaning
To draw or scribble absentmindedly, often while thinking about something else.
Example
She doodled flowers in the corner of her notebook during class.
C1 verb /dɪˈpoʊz/

depose

Meaning
to remove someone from office or power, especially suddenly and forcefully
Example
The rebels managed to depose the dictator after years of unrest.
C1 adjective /ˈdɒdʒi/

Dodgy

可疑的; 值得怀疑的; 不可靠的; 危险的或有风险的
Meaning
suspicious; questionable; unreliable; risky or dangerous
Example
That deal sounds dodgy to me.
这个交易听起来很可疑。
C1 noun/verb /dɪsˈdeɪn/

disdain

Meaning
The feeling that someone or something is unworthy of respect; to regard with contempt.
Example
She looked at the messy room with open disdain.
C1 noun ˌdɛɡrəˈdeɪʃən

degradation

退化
Meaning
The condition or process of degrading or being degraded.
Example
Soil degradation due to overuse is a growing issue.
由于过度使用，土壤退化是一个日益严重的问题。
C1 adjective /dɪˈfʌŋkt/

defunct

停用，废弃
Meaning
No longer existing, operating, or functioning.
Example
The company became defunct after the financial crisis.
这家公司在金融危机后不再运作。
C1 noun /ˈdæn.drʌf/

Dandruff

头皮屑
Meaning
small white or grey flakes of dead skin that form on the scalp and fall from the hair
Example
He used a special shampoo to treat his persistent dandruff problem.
他使用了一种特殊的洗发水来治疗他持续的头皮屑问题。
C1 noun /ˌdɛtəˈneɪʃən/

detonation

爆炸
Meaning
The act of exploding or causing something to explode.
Example
The sudden detonation shook the entire building.
突如其来的爆炸震动了整个大楼。
C1 noun /dɪˈsaɪ.pəl/

Disciple

弟子; 信徒
Meaning
a follower and student of a teacher, leader, or philosopher; devoted follower
Example
The famous philosopher had many disciples who spread his teachings worldwide.
那位著名的哲学家有许多弟子，他们将他的教义传播到世界各地。
C1 verb /dɪˈfjuːz/

diffuse

Meaning
to spread over a wide area or among a large number of people
Example
The smell of fresh bread diffused through the entire house.
C1 verb /ˌdɪsˈmaʊnt/

dismount

下马
Meaning
to get off or down from something, especially a horse, bicycle, or motorcycle
Example
The rider dismounted from the horse after a long journey.
骑手在长途旅行后下马。
C1 noun /ˈdaɪhɑːrd/

diehard

Meaning
A person who strongly resists change and remains loyal to a belief or cause.
Example
He is a diehard fan of classic rock music.
C1 verb /doʊt/

dote

宠爱
Meaning
to show excessive love or fondness for someone or something
Example
She tends to dote on her grandchildren.
她倾向于宠爱她的孙子孙女。
C1 noun /ˈdeɪˌbreɪk/

daybreak

黎明
Meaning
The time in the morning when daylight first appears; dawn.
Example
They set out on their journey at daybreak.
他们在黎明时分开始了他们的旅程。
C1 noun /ˈdiːviəns/

deviance

偏差
Meaning
Behavior that differs from accepted social or moral standards.
Example
The book studies deviance in urban youth culture.
这本书研究了城市青少年文化中的偏差。
C1 noun /ˌdɪsərˈteɪʃən/

dissertation

学位论文
Meaning
A long piece of writing on a particular subject, usually written for a university degree.
Example
She spent two years writing her doctoral dissertation.
她花了两年时间写她的博士论文。
C1 noun /ˌdɪsbɪˈliːvər/

disbeliever

不信者
Meaning
a person who does not believe in something, especially a religion or idea
Example
He was called a disbeliever for rejecting the traditional faith.
因为拒绝传统信仰，他被称为不信者。
C1 verb /diːˈfjuːz/

defuse

Meaning
To make a situation less dangerous, tense, or explosive; to remove a fuse from a bomb.
Example
The negotiator helped defuse the tense situation.
C1 noun /ˈdɛsɪˌbɛl/

decibel

分贝
Meaning
a unit used to measure the intensity of sound
Example
The noise level in the factory exceeded 90 decibels.
工厂里的噪音水平超过了90分贝。
C1 noun /doʊ/

doe

母鹿
Meaning
a female deer, especially an adult one
Example
The doe and her fawn were grazing in the meadow.
母鹿和她的小鹿在草地上吃草。
C1 noun, verb /dɪsˈɑːnər/

dishonor

Meaning
a state of shame or loss of respect; to bring shame upon someone or something
Example
The soldier felt he had brought dishonor to his family.
C1 verb /dɪˈstɪl/

distill

Meaning
To purify a liquid by heating and cooling; to extract the essential meaning or most important aspects.
Example
The factory distills water to make it safe for drinking.
C1 adjective /dɪsˈkɔːrdənt/

discordant

不和谐
Meaning
disagreeing or clashing; harsh and jarring in sound
Example
The discordant notes of the band hurt our ears.
乐队的不和谐音符让我们的耳朵很痛。
C1 verb /daɪˈleɪt/

dilate

扩展
Meaning
To make wider, larger, or more open.
Example
The doctor used drops to dilate the patient's pupils.
医生用药水来扩张病人的瞳孔。
C1 verb /ˈdæb.əl/

dabble

浅尝辄止
Meaning
To take part in an activity in a casual or superficial way.
Example
He dabbled in painting during his college days.
他在大学时涉足绘画。
C1 noun /ˈdɛməɡɒɡ/

demagogue

民粹主义者
Meaning
A political leader who seeks support by appealing to popular desires and prejudices rather than by using rational argument.
Example
The crowd was swayed by the fiery speeches of the demagogue.
人群受到了民粹主义者激烈演讲的影响。
C1 noun /ˌdɜːrməˈtɑːlədʒi/

dermatology

皮肤学
Meaning
The branch of medicine concerned with the skin and its diseases.
Example
He studied dermatology at medical school.
他在医学院学习了皮肤学。
C1 adjective /dɪˈbɪl.ɪ.teɪ.tɪŋ/

debilitating

虚弱的
Meaning
Making someone or something weak and infirm.
Example
The disease had a debilitating effect on his health.
该疾病对他的健康产生了衰弱的影响。
C1 adjective /dɪˈfɛnsəbəl/

defensible

可防御的 / 合理的
Meaning
Capable of being protected against attack or criticism; justifiable.
Example
Her decision was legally defensible.
她的决定在法律上是可防御的。
C1 noun /dɪˈspɜːrʒən/

dispersion

分散
Meaning
The action or process of distributing things or people over a wide area.
Example
The dispersion of seeds by the wind helps plants reproduce.
风的种子散布有助于植物繁殖。
C1 adjective /ˌdaɪəˈbɒlɪkəl/

diabolical

恶魔般的
Meaning
Wicked, cruel, or outrageously bad; resembling the devil.
Example
The dictator’s diabolical rule brought misery to the nation.
独裁者的恶魔般统治给国家带来了苦难。
C1 adjective /dɪˈsɪd.ju.əs/

deciduous

落叶性
Meaning
Referring to trees that shed their leaves seasonally, typically in autumn.
Example
Oak and maple trees are deciduous, shedding leaves in autumn.
橡树和枫树是落叶性树木，在秋天掉落叶子。
C1 verb /daɪˈvɛst/

divest

Meaning
to strip away possessions, rights, or assets; to rid oneself of
Example
The company decided to divest its unprofitable division.
C1 verb /dɪsˈmæntəl/

dismantle

拆解
Meaning
to take apart; to remove or destroy the parts of
Example
Workers will dismantle the old bridge next month.
工人们将在下个月拆除旧桥。
C1 noun ˌdep.əˈzɪʃ.ən

deposition

沉积，沉积物的沉降过程
Meaning
The action of depositing something; the laying down of matter by a natural process.
Example
River deposition leads to the formation of new landmasses.
河流沉积导致新陆地的形成。
C1 adjective /ˈdɛkədənt/

decadent

颓废的, 奢华的
Meaning
Characterized by or reflecting a state of moral or cultural decline; excessively self-indulgent.
Example
The party was filled with decadent luxury and excess.
派对充满了颓废的奢华与过度。