deputize
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英语 BN 孟加拉语 HI 印地语 ES 西班牙语 FR 法语 DE 德语 RU 俄语 ZH 中文 JA 日语
All Vocabulary Cards All Vocabularies
C2 verb /ˈdɛpjʊˌtaɪz/

deputize

任命为副职
Meaning
To appoint someone as a deputy; to act as a substitute or representative.
Example
The sheriff decided to deputize several locals to help maintain order.
治安官决定指派几位当地人以帮助维持秩序。
C2 adjective /ˈdæpəld/

dappled

斑驳
Meaning
Marked with spots or patches of light and shade or different colors.
Example
The forest floor was dappled with sunlight.
森林的地面被阳光斑驳照亮。
B2 adjective /ˌdɪp.ləˈmæt.ɪk/

Diplomatic

外交的; 善于处理人际关系
Meaning
relating to diplomacy; tactful; skilled in managing relationships
Example
She gave a diplomatic answer to avoid offending anyone.
她给出了外交的回答，以避免冒犯任何人。
C2 noun /ˈdrʌmɪt/

Drumet

军鼓
Meaning
a small drum used in military or marching bands
Example
The drummer played a steady beat on the drumet during the parade.
鼓手在游行中打出了稳定的节奏。
C1 noun /dɪsˈsɜːrvɪs/

disservice

损害
Meaning
A harmful action; something that does damage rather than help.
Example
Spreading false information is a disservice to the community.
传播虚假信息对社区是一种损害。
C1 adjective /dɪsˈrɛpjətəbl̩/

disreputable

声名狼藉
Meaning
having a bad reputation; not considered respectable or trustworthy
Example
The journalist avoided staying in the disreputable part of town.
记者避免住在城市的声名狼藉地区。
C2 verb /dɪˈsɛvər/

dissever

分开
Meaning
To separate or cut apart.
Example
The treaty sought to dissever the two hostile regions.
条约试图分裂这两个敌对的地区。
B2 noun /dəˈmeɪn/

domain

领域
Meaning
An area of knowledge, activity, or territory over which control is exercised.
Example
Mathematics is her main domain of expertise.
数学是她主要的专业领域。
B2 verb /dɪˈsiːv/

deceive

欺骗
Meaning
To cause someone to believe something that is not true.
Example
He tried to deceive his friends with a fake story.
他试图用一个假的故事欺骗他的朋友。
B2 noun /dɔːn/

Dawn

黎明
Meaning
the first appearance of light in the sky before sunrise; the beginning or start of something
Example
The fishermen set out to sea before dawn to catch the morning tide.
渔民们在黎明前出海，赶上早潮。
B2 adjective /dɪˈstrɛst/

distressed

痛苦
Meaning
feeling or showing extreme anxiety, sorrow, or pain
Example
She looked distressed after hearing the bad news.
听到坏消息后，她看起来很痛苦。
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。
B1 verb /dɪɡ/

dig

挖掘
Meaning
to break up and move earth with a tool or machine, or with hands, paws, etc.
Example
They decided to dig a hole for the new tree.
他们决定为新树挖一个洞。
B1 verb /ˌdɪsəˈpɔɪnt/

disappoint

失望
Meaning
to fail to fulfill the hopes or expectations of someone; to make someone feel sad or displeased
Example
I hope I won't disappoint you with my performance.
我希望我的表现不会让你失望。
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 /ˌdɪspɛnˈseɪʃən/

dispensation

Meaning
An exemption from a rule or usual requirement; a system of order, government, or control.
Example
The school granted him a special dispensation to skip the exam due to illness.
B2 noun /dɪˈsɛnt/

descent

下降 / 血统
Meaning
the action of moving downward, falling, or dropping; ancestry or origin
Example
The climbers began their descent from the mountain peak.
登山者从山顶开始下降。
B2 verb /dɪˈnaʊns/

denounce

谴责
Meaning
To publicly declare something to be wrong, evil, or condemn strongly.
Example
The leader denounced corruption in his speech.
领导人在他的演讲中谴责了腐败。
C2 verb /dɪˈbɪlɪteɪt/

debilitate

削弱
Meaning
to weaken or make someone or something infirm
Example
The long illness debilitated his strength.
长时间的疾病削弱了他的力量。
C2 adjective /ˌdɪsəˈfɛktɪd/

disaffected

不满的
Meaning
Dissatisfied and rebellious, especially against authority or leadership.
Example
The reforms were introduced to calm the disaffected youth.
改革是为了平息不满的青年。
C1 verb /ˌdiːˈbʌŋk/

debunk

揭穿，揭露虚假
Meaning
Expose the falseness or hollowness of (a myth, idea, or belief).
Example
Scientists debunked the myth that vaccines cause autism.
科学家揭穿了疫苗导致自闭症的神话。
C1 adjective /dɪˈreɪndʒd/

deranged

疯狂
Meaning
mentally disturbed or insane; behaving irrationally
Example
The deranged man shouted nonsense in the street.
那个疯狂的人在街上大喊胡言乱语。
C2 adjective /ˈdɔːrsəl/

dorsal

背鳍
Meaning
Relating to the back or upper side of an animal or body part.
Example
Sharks have a prominent dorsal fin.
鲨鱼有一个显眼的背鳍。
B2 adjective /dɪˈzæs.trəs/

Disastrous

灾难性的
Meaning
extremely bad or unsuccessful; causing great damage
Example
The hurricane had disastrous effects on the city.
飓风对城市造成了灾难性的影响。
C1 noun /ˈdɪsɪdənt/

dissident

异见者
Meaning
A person who opposes official policy, especially that of an authoritarian state.
Example
The dissident was arrested for speaking against the government.
异见者因反对政府而被逮捕。
B2 adjective /dɪˈzɜːrtɪd/

deserted

荒废的
Meaning
Empty of people; abandoned.
Example
The village looked completely deserted after the storm.
暴风雨过后，村庄看起来完全荒废了。
C2 adjective /ˈdjuːtiəbl/

dutiable

需缴关税
Meaning
subject to customs duty or tax
Example
Imported electronics are often dutiable at the border.
进口电子产品在边境通常需缴纳关税。
B2 noun /ˈden.sə.ti/

Density

密度
Meaning
the degree of compactness of a substance; the quantity of something per unit area
Example
The density of population in the city center is extremely high.
市中心的人口密度极高。
C1 verb /dɪˈmɔrəˌlaɪz/

demoralize

Meaning
to cause someone to lose confidence or hope
Example
The constant criticism demoralized the young athlete.
C1 adjective dɪ ˈskrɛʃ.ən.er.i

discretionary

酌情
Meaning
Available for use at the discretion of the user; not required or mandatory.
Example
He set aside some discretionary income for travel.
他为旅行留出了一些酌情收入。
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。
B2 noun /ˈdaɪ.vər/

Diver

潜水员
Meaning
a type of water bird that dives underwater to catch fish
Example
The diver disappeared beneath the surface to catch a fish.
潜水员消失在水面下去捕捉一条鱼。
C1 noun delˈteɪɪk ˈlændskeɪp

deltaic landscape

三角洲景观
Meaning
A geographical area formed by sediment deposits at the mouth of a river, creating a triangular land formation.
Example
Bangladesh has a unique deltaic landscape.
孟加拉国拥有独特的三角洲景观。
C2 adjective /daɪˈɒsɪsən/

diocesan

与教区相关
Meaning
relating to a diocese or the district under the supervision of a bishop in the Christian Church
Example
The diocesan council met to discuss church affairs.
教区委员会聚集在一起讨论教会事务。
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。
B2 adjective /ˈdevəsteɪtɪŋ/

devastating

Meaning
causing severe shock, distress, or destruction; extremely damaging or upsetting
Example
The earthquake had a devastating effect on the city.
B1 noun/verb /ˈdɒkjʊmənt/

document

文件
Meaning
Noun: A written, printed, or electronic record that provides information or evidence. Verb: To record information in written or electronic form.
Example
She carefully documented all the expenses of the trip.
她仔细记录了旅行的所有费用。
B2 verb /daɪ/

dye

染色
Meaning
to change the color of something using a chemical substance
Example
She will dye her hair blonde tomorrow.
她明天会把头发染成金色。
C1 adjective /dɪˈraɪsɪv/

derisive

嘲讽的
Meaning
Expressing contempt or ridicule.
Example
She gave a derisive laugh at his attempt to sing.
她对他的唱歌尝试发出了嘲讽的笑声。
A1 noun /ˈdɔː.tər/

Daughter

女儿
Meaning
a female offspring; a young woman in relation to her parents
Example
Their daughter graduated from medical school with top honors.
她的女儿以优异的成绩从医学院毕业。
B1 adjective /ˈdɛdɪˌkeɪtɪd/

dedicated

专心致志
Meaning
devoted to a cause, task, or purpose
Example
She is a dedicated teacher who goes above and beyond for her students.
她是一位献身的教师，为她的学生竭尽全力。
C2 verb /dɪˈbɔːtʃ/

debauch

堕落
Meaning
to corrupt morally; to lead into excessive indulgence in sensual pleasures
Example
The novel shows how wealth can debauch a person's character.
小说展示了财富如何败坏一个人的品格。
C2 noun /daɪˈɡrɛʃən/

digression

离题
Meaning
A temporary departure from the main subject in speech or writing.
Example
Her story was full of interesting digressions.
她的故事充满了有趣的离题部分。
B2 noun /ˈdɪɡ.nə.ti/

Dignity

尊严，尊重，自尊
Meaning
the state of being worthy of honor or respect; composure and self-respect
Example
Despite facing hardships, she maintained her dignity throughout the ordeal.
尽管面临困难，她在整个考验过程中保持了尊严。
B1 noun ˈdɪdʒ.ɪ.təl tuːlz

digital tools

数字工具
Meaning
Electronic software and applications used for learning and educational purposes.
Example
Schools are integrating digital tools to enhance learning.
学校正在整合数字工具来增强学习效果。
C2 verb /dɪˈkænt/

decant

倒入
Meaning
To pour liquid gently from one container into another, especially without disturbing the sediment.
Example
She carefully decanted the wine into a clean glass.
她小心地将酒倒入干净的玻璃杯。
C1 verb /ˈdɛsɪmeɪt/

decimate

摧毁
Meaning
To destroy or kill a large proportion of something.
Example
The wildfire decimated the forest.
火灾摧毁了森林。
B2 noun /dɪsˈkloʊʒər/

disclosure

披露
Meaning
the action of making something known or public
Example
The disclosure of the company's financial status was delayed.
公司财务状况的披露被延迟了。
C1 adjective /ˈdraʊ.zi/

Drowsy

困倦的; 疲倦的; 无精打采的
Meaning
feeling sleepy and lethargic; half asleep; tired
Example
I felt drowsy after the heavy meal.
吃完重餐后我感到困倦。
A1 noun /ˈdɒlər/

dollar

美元
Meaning
The basic monetary unit of the United States and some other countries
Example
I need five dollars to buy this book.
我需要五美元来买这本书。
C1 adjective dɒɡˈmæt.ɪk

dogmatic

教条的
Meaning
Being inclined to lay down principles as incontrovertibly true; characterized by arrogant assertion of unproven principles.
Example
His dogmatic approach to politics made discussions difficult.
他的教条的政治观点让讨论变得困难。
B1 adjective dɪˈleɪd

delayed

延迟的
Meaning
Late or postponed; happening later than planned or expected.
Example
The Artemis mission was delayed due to technical challenges.
阿耳忒弥斯任务由于技术问题被延迟。
C2 noun /ˌdiːnəʊˈteɪʃən/

denotation

指示
Meaning
The literal or primary meaning of a word, in contrast to the feelings or ideas that the word suggests.
Example
The denotation of the word 'rose' is a type of flower.
“玫瑰”这个词的指示是一个花的种类。
C2 adjective /ˈdɔːnt.ləs/

dauntless

无畏的，勇敢的，坚定的
Meaning
Showing fearlessness and determination; brave and resolute.
Example
The dauntless soldier fought against all odds.
无畏的士兵与所有困境作斗争。
C2 adjective /ˈdʌlsɪt/

dulcet

甜美
Meaning
sweet and soothing (often used ironically)
Example
She was enchanted by his dulcet voice.
她被他甜美的声音迷住了。
B2 adjective /ˈdɪl.ɪ.dʒənt/

Diligent

勤奋的
Meaning
hardworking and careful; showing persistent effort
Example
She is a diligent student who studies every day.
她是一个勤奋的学生，每天都在学习。
A2 adjective /draɪ/

Dry

干燥的; 无湿气或液体; 无聊
Meaning
free from moisture or liquid; not wet; lacking interest or excitement
Example
The desert has very dry climate.
沙漠的气候非常干燥。
C2 verb /dɪsˈbɜːrs/

disburse

分配
Meaning
to pay out money, especially from a fund
Example
The organization will disburse the funds to the affected families.
该组织将把资金分配给受影响的家庭。
C2 adjective /ˈdɛsəlˌtɔːri/

desultory

杂乱无章
Meaning
lacking a clear plan, purpose, or enthusiasm
Example
His desultory conversation bored the audience.
他那杂乱无章的谈话让观众感到无聊。
B2 noun, verb /ˈdɪskɔːrs/

discourse

讲座, 辩论
Meaning
Written or spoken communication or debate.
Example
The professor gave a discourse on ancient philosophy.
教授进行了关于古代哲学的讲座。
B1 verb /dɪˈpɑːrt/

depart

Meaning
to leave, especially to start a journey
Example
The train will depart at 9 a.m.
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。
A2 verb /draɪv/

drive

驾驶
Meaning
to control and move a vehicle; to force someone to move
Example
I will drive to work tomorrow morning.
我明天早上开车去工作。
C1 noun /ˈdeɪ.ə.ti/

deity

神祇
Meaning
a god or goddess
Example
The temple is dedicated to a Hindu deity.
这座寺庙奉献给一位印度神祇。
C1 noun /ˈdɒktrɪn/

doctrine

教义
Meaning
A set of beliefs or principles held and taught by a religious, political, or other group.
Example
The church follows a strict doctrine on moral values.
教会遵循一项关于道德价值的严格教义。
A1 adjective /ˈdɪf.ər.ənt/

different

不同的
Meaning
Not the same as another; distinct or unlike.
Example
Her opinion was completely different from mine.
她的意见与我的完全不同。
C1 verb /ˈdɛnɪˌɡreɪt/

denigrate

贬低
Meaning
to criticize unfairly; to belittle or disparage someone or something
Example
He was quick to denigrate the achievements of his colleagues.
他很快就贬低了同事们的成就。
B2 verb /dɪˈpraɪv/

deprive

Meaning
to take something away from someone, or prevent them from having it
Example
The new law may deprive people of their rights.
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。
C2 noun /dɪˈbɛntʃər/

debenture

债券
Meaning
a type of debt instrument not secured by physical assets or collateral
Example
The company raised capital by issuing debentures to investors.
公司通过向投资者发行债券筹集资金。
B2 verb /dɪˈplɔɪ/

deploy

部署
Meaning
to position strategically; to use effectively
Example
The military will deploy troops to the border.
军队将部署部队到边境。
C1 noun /ˌdɪstɪˈleɪʃən/

distillation

蒸馏
Meaning
The process of purifying a liquid by heating and cooling; the extraction of the essential meaning.
Example
Distillation is commonly used to produce alcoholic beverages.
蒸馏通常用于生产酒精饮料。
A2 adjective, noun /dɛd/

dead

死的
Meaning
No longer alive; the end of life.
Example
The old tree is completely dead.
那棵老树已经完全死了。
B2 noun /ˌdek.ləˈreɪ.ʃən/

Declaration

声明; 宣告; 公告
Meaning
a formal or explicit statement or announcement; an official proclamation
Example
The president's declaration of independence marked a historic moment for the nation.
总统的独立宣言标志着国家历史性的时刻。
C2 noun /dɪˈkæmərən/

decameron

十日谈 (博卡乔的故事集)
Meaning
A collection of 100 tales written by Giovanni Boccaccio in the 14th century, told by a group of people over ten days.
Example
The Decameron is considered a masterpiece of classical Italian literature.
《十日谈》被认为是意大利古典文学的杰作。
B1 adjective /ˈdiːsənt/

decent

体面
Meaning
conforming to standards of propriety, good taste, or morality
Example
He found a decent job after months of searching.
他在几个月的寻找后找到了一份体面的工作。
C1 adjective /ˈdɪzməl/

Dismal

阴沉的; 沮丧的; 令人悲伤的
Meaning
gloomy; depressing; causing sadness or despair
Example
The weather was dismal with heavy rain and dark clouds.
天气阴沉，伴随大雨和黑暗的云层。
A2 adverb /dəˈrɛktli/ or /daɪˈrɛktli/

directly

直接
Meaning
in a straight line or manner; without anything in between
Example
She spoke directly to the manager about her concerns.
她直接与经理讨论了她的担忧。
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 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。
C2 adjective /dɛˈspɒtɪk/

despotic

专制
Meaning
exercising power in a cruel, oppressive, or authoritarian way
Example
The king’s despotic rule left the people in misery.
国王的专制统治使人民陷入了痛苦。
B2 noun, verb /ˈdeɪ.bjuː/

debut

首演
Meaning
The first public appearance or performance of someone or something.
Example
The young actor made his debut on the big stage.
年轻演员在大舞台上首次亮相。
C2 noun /dɪˈstɛnʃən/

distention

膨胀
Meaning
The state of being swollen due to internal pressure.
Example
The patient complained of abdominal pain and distention.
病人抱怨腹部疼痛和膨胀。
C2 adjective /ˌdɒktrɪˈnɛər/

doctrinaire

教条主义者
Meaning
stubbornly devoted to a theory or doctrine without regard to practical considerations
Example
His doctrinaire approach to politics alienated many supporters.
他对政治的教条主义方法使许多支持者感到疏远。
C2 noun /ˈdɛkəˌpɒd/

decapod

十足目
Meaning
An arthropod with ten limbs, such as crabs, lobsters, and shrimps.
Example
The lobster is a well-known decapod.
龙虾是一种著名的十足目动物。
A2 noun /ˈdaʊnˌtaʊn/

downtown

市中心
Meaning
the central part of a city
Example
They spent the afternoon shopping downtown.
他们在市中心购物度过了下午。
C2 noun /ˈdɒɡ roʊz/

Dog-rose

狗玫瑰
Meaning
A wild rose species with pink or white flowers and thorny stems, common in hedgerows
Example
The dog-rose bush grew wild along the countryside path.
狗玫瑰灌木在乡村小路旁野生生长。
B2 noun /ˈdɪpləmæt/

diplomat

外交官
Meaning
An official representing a country abroad; a person skilled in dealing with people tactfully.
Example
The diplomat negotiated a peace agreement.
外交官谈判了一个和平协议。
C1 adverb /ˈduːli/

Duly

恰当地, 按时
Meaning
in accordance with what is required or appropriate; at the proper time
Example
The documents were duly signed and submitted.
文件已按时恰当地签署并提交。
C1 verb /ˌdɪskənˈsɜːrt/

disconcert

使困惑
Meaning
To unsettle, confuse, or disturb the composure of someone.
Example
The sudden change of plans disconcerted the team.
计划的突然变化让团队感到困惑。
C1 adjective /dɪsˈsɪmɪlər/

dissimilar

不同
Meaning
Not alike; different.
Example
Though they are twins, their personalities are dissimilar.
虽然他们是双胞胎，但他们的个性不同。
C1 verb /dɛlv/

delve

Meaning
To investigate deeply; to dig into a subject or area.
Example
The researcher delved into ancient manuscripts to find clues.
C2 verb /dɪsˈmɛmbər/

dismember

肢解
Meaning
to cut or tear the limbs from a body; to divide into separate parts
Example
The king ordered his enemies to be dismembered.
国王命令将他的敌人肢解。
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。
C2 noun /ˈdɪfɪdəns/

diffidence

缺乏自信
Meaning
Lack of self-confidence; shyness or modesty.
Example
Her diffidence made it hard for her to speak in public.
她的缺乏自信让她很难在公众面前发言。
B2 adjective /ˈdespərət/

Desperate

绝望
Meaning
reckless; extremely urgent; critical
Example
The situation became desperate as water supplies ran out.
当水源耗尽时，情况变得绝望。
C1 noun /dɪˈfjuːʒən/

diffusion

Meaning
the spreading of something more widely or the movement of particles from high to low concentration
Example
The diffusion of information on social media is rapid.
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。
B2 verb dɪˈtɪəriəreɪt

deteriorate

恶化
Meaning
To become progressively worse in quality, condition, or performance; to decline.
Example
Unplanned growth can deteriorate living conditions.
无计划的增长可能会恶化生活条件。
C1 noun /dɪˈfaɪəns/

defiance

反抗
Meaning
Open resistance or bold disobedience.
Example
The protest was an act of defiance against injustice.
抗议是反对不公正的反抗行为。
B2 verb /ˈdɒmɪneɪt/

dominate

主导
Meaning
to have power or control over something or someone
Example
The company dominates the smartphone market.
这家公司主导了智能手机市场。
A1 noun /dɔːr/

Door

门
Meaning
a movable barrier used to close an entrance to a building or room
Example
Please close the door when you leave the room.
离开房间时请关上门。
B1 noun ˈdɪsɪplɪn

discipline

纪律
Meaning
The practice of training people to obey rules or a code of behavior, using punishment to correct disobedience
Example
Discipline helps maintain focus and productivity.
纪律有助于保持专注和生产力。
B2 verb /ˈdɛzɪɡneɪt/

designate

指定
Meaning
to officially assign, appoint, or indicate something or someone
Example
The committee will designate a new chairperson next week.
委员会下周将指定一位新主席。
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。
B1 adjective dəˈmes.tɪk

domestic

国内的
Meaning
Existing or occurring inside a particular country; not foreign or international.
Example
Domestic investments stabilize the economy.
国内投资稳定经济。
B2 verb /dɪˈvaɪz/

devise

设计
Meaning
To plan or invent something carefully.
Example
The engineers devised a new method to reduce costs.
工程师们设计了一种新的方法来降低成本。
B2 noun /ˌdɛm.əˈɡræf.ɪks/

Demographics

人口统计学
Meaning
Statistical data relating to the population and particular groups within it.
Example
Demographics help in targeted advertising.
人口统计有助于定向广告。
C1 adjective /ˈdɒɡɪd/

dogged

顽强
Meaning
showing stubborn determination and persistence
Example
She succeeded through dogged determination.
她通过顽强的决心取得了成功。
B2 adjective /dʌm/

Dumb

愚蠢的; 哑的; 傻的
Meaning
unable to speak; silent; lacking intelligence; stupid
Example
She remained dumb during the entire meeting.
她在整个会议中保持沉默。
B2 verb /drɪp/

drip

滴落
Meaning
to fall or let fall in drops
Example
Water was dripping from the broken pipe.
水从破裂的管道中滴下来。
C1 noun ˌdaɪvɜːsɪfɪˈkeɪʃən

diversification

多样化
Meaning
The practice of spreading investments across various assets or sectors to reduce risk.
Example
Diversification helps to reduce investment risk.
多样化有助于降低投资风险。
C1 noun, adjective /dɪˈfiːtɪst/

defeatist

失败主义者
Meaning
A person who expects or is excessively ready to accept failure; showing a tendency to expect defeat.
Example
His defeatist attitude discouraged the rest of the team.
他的失败主义态度使队伍中的其他人感到灰心。
C1 adjective /dæft/

daft

愚蠢
Meaning
Silly or foolish.
Example
It was a daft idea to go hiking without water.
没有水去远足是一个愚蠢的想法。
C1 verb ˈdwɪn.dl

dwindle

减少
Meaning
To diminish gradually in size, amount, or strength; to become progressively smaller.
Example
His savings dwindled due to unexpected expenses.
由于意外开销，他的储蓄减少了。
C2 adjective /ˈdekərəs/

decorous

得体
Meaning
showing proper and polite behavior; marked by good taste
Example
The audience gave a decorous applause after the performance.
观众在演出后给予了得体的掌声。
B2 adjective /ˈdred.fəl/

Dreadful

可怕的; 恐怖的; 可憎的
Meaning
extremely bad or unpleasant; causing fear or suffering; terrible
Example
The weather was dreadful during our vacation.
假期期间，天气很可怕。
B2 noun dɪˈskrɛʃən

discretion

谨慎
Meaning
The quality of behaving or speaking in such a way as to avoid causing offense or revealing private information.
Example
She handled the situation with great discretion.
她以极大的谨慎处理了这一情况。
C2 adjective /dɪsˈpɛptɪk/

dyspeptic

消化不良的, 易怒的
Meaning
Relating to indigestion or having a gloomy or irritable disposition.
Example
After the heavy meal, he felt dyspeptic and uncomfortable.
在丰盛的餐后，他感到消化不良并且不舒服。
B2 noun /dɪsˈtrɛs/

distress

痛苦
Meaning
extreme anxiety, sorrow, or pain
Example
He felt a deep sense of distress when he heard the bad news.
当他听到坏消息时，他感到深深的痛苦。
A1 noun /dɪˈsɛmbər/

december

十二月
Meaning
the twelfth and last month of the year in the Gregorian calendar
Example
December is usually cold in many countries.
十二月在许多国家通常很冷。