doyen
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C2 noun /ˈdɔɪən/

doyen

最受尊敬的人
Meaning
The most respected or prominent person in a particular field.
Example
He is regarded as the doyen of modern literature in the country.
他被视为该国现代文学的多伊恩。
C1 verb /dɪˈfaɪl/

defile

亵渎
Meaning
to pollute, corrupt, or make dirty
Example
The river was defiled by industrial waste.
河流被工业废物亵渎了。
B2 verb /dɪsˈeɪbl/

disable

禁用
Meaning
to make something unable to function or operate
Example
The technician disabled the alarm system temporarily.
技术人员暂时禁用了报警系统。
B2 verb /daɪˈdʒest/

digest

消化
Meaning
to break down food in the body; to think about and understand
Example
It takes time to digest a heavy meal.
要花时间消化一顿丰盛的饭菜。
B2 noun /dɪˈpləʊ.mə/

diploma

文凭
Meaning
an official document showing that a person has completed a course of study or training
Example
She received her diploma after finishing the nursing program.
她在完成护理课程后获得了文凭。
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。
C2 noun /ˈdoʊtɪdʒ/

dotage

暮年
Meaning
The period of old age, especially when one is weak or senile.
Example
He spent his dotage reminiscing about his youth.
他度过了自己的暮年，回忆着自己的青春。
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。
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。
C1 noun /ˈdɑː.mə.saɪl/

domicile

住所
Meaning
A person's legal residence or permanent home.
Example
He declared Canada as his legal domicile.
他宣布加拿大为他的法定住所。
C2 noun /dɪˈprævɪti/

depravity

堕落
Meaning
moral corruption; wickedness
Example
The film portrays the moral depravity of a corrupt society.
这部电影描绘了腐化社会的道德堕落。
C2 noun /ˈdɛvɪltrɪ/

deviltry

恶魔的诡计
Meaning
Cruel or malicious behavior; mischief with an evil aspect.
Example
The villain’s deviltry terrified the townsfolk.
恶棍的恶作剧吓坏了镇上的人。
C1 noun /ˈdrɪz.əl/

Drizzle

毛毛雨
Meaning
light rain falling in very fine drops; a very light rainfall
Example
The gentle drizzle continued throughout the morning, making everything misty.
温和的毛毛雨持续了整个早晨，使一切都显得有些模糊。
B1 noun ˌdɪsədˈvæntɪdʒ

disadvantage

劣势
Meaning
An unfavorable circumstance or condition that reduces the chances of success or effectiveness.
Example
Urdu's dominance placed Bengalis at a disadvantage.
乌尔都语的主导地位使孟加拉人处于不利地位。
C2 verb /dɪˈkleɪm/

declaim

Meaning
to speak aloud in a formal, passionate, or theatrical way
Example
The actor declaimed his lines with great intensity.
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 noun /ˈduːti/

Dhuti

杜提
Meaning
a traditional Indian garment for men consisting of a piece of unstitched cloth worn around the waist and legs
Example
The elderly man wore a white dhuti during the religious ceremony.
老人穿着白色杜提参加宗教仪式。
A2 noun /ˈdrɔːɪŋ/

drawing

幸福
Meaning
a picture or diagram made with a pencil, pen, or crayons rather than paint
Example
She showed me a drawing of her house.
当她获得奖项时，她无法掩饰自己的幸福。
C1 noun ˌdjʊə.rəˈbɪl.ə.ti

durability

耐用性
Meaning
The ability to withstand wear, pressure, or damage; hard-wearing.
Example
The durability of materials affects performance.
材料的耐用性会影响性能。
C1 noun /djuːn/

dune

沙丘
Meaning
A hill or ridge of sand formed by the wind, usually found in deserts or near beaches.
Example
The children played on the sand dune by the beach.
孩子们在海滩旁的沙丘上玩耍。
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。
B2 noun /dɪsˈkʌmfərt/

discomfort

不适
Meaning
A feeling of slight pain, unease, or awkwardness.
Example
She shifted in her chair due to discomfort in her back.
由于背部不适，她在椅子上移动。
C2 adjective /ˈdʌktaɪl/

ductile

延展性强
Meaning
capable of being stretched into a thin wire without breaking; easily influenced
Example
Gold is a very ductile metal.
黄金是一种非常延展的金属。
C2 noun /ˈdɛsɪkənt/

desiccant

干燥剂
Meaning
a substance that absorbs moisture and keeps things dry
Example
Silica gel packets are commonly used as a desiccant in packaging.
硅胶包通常作为干燥剂用于包装中。
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。
C2 verb /ˈdʌmfaʊnd/

dumbfound

震惊
Meaning
to greatly astonish or shock someone so they are temporarily speechless
Example
The magician's trick dumbfounded the audience.
魔术师的把戏让观众震惊。
C2 verb /dɪˈspɒnd/

despond

沮丧
Meaning
to lose confidence or hope; to become dejected
Example
After repeated failures, he began to despond.
在多次失败后，他开始感到沮丧。
B2 noun /dɪˈrɛktəri/

directory

目录
Meaning
a book or online resource listing people, businesses, or services with relevant details
Example
I need to find a plumber in the phone directory.
我需要在电话目录中找到一个水管工。
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。
B2 noun /dɪsˈɡʌst/

Disgust

厌恶
Meaning
a feeling of revulsion or strong disapproval aroused by something unpleasant
Example
She expressed her disgust at the politician's corrupt behavior openly.
她公开表达了对政治家腐败行为的厌恶。
A1 noun /deɪts/

Dates

枣
Meaning
sweet brown oval fruits that grow on date palm trees
Example
Dates are commonly eaten during Ramadan to break the fast.
日期通常在斋月期间食用，用来打破禁食。
C1 noun ˈdɪskɔrd

discord

不和
Meaning
Disagreement or conflict between people or ideas.
Example
Discord among people disrupts societal stability.
人们之间的不和破坏了社会的稳定。
C2 verb /ˌdɪspəˈzɛs/

dispossess

剥夺
Meaning
to deprive someone of land, property, or other possessions
Example
The new law threatened to dispossess many farmers of their land.
新法律威胁着剥夺许多农民的土地。
C2 noun /ˈdeɪ.mæn/

day-man

日工
Meaning
a worker employed by the day; a day laborer
Example
The farmer hired a day-man to help with the harvest.
农民雇佣了一个日工来帮助收割。
C2 verb /ˌdɪsɪnˈhɛrɪt/

disinherit

剥夺继承权
Meaning
to deprive someone, especially a child, of inheritance or right to property
Example
The father threatened to disinherit his son for his reckless actions.
父亲威胁要因儿子的鲁莽行为剥夺他的继承权。
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。
B2 noun ˌdedɪˈkeɪʃn

dedication

奉献
Meaning
The quality of being dedicated or committed to a task or purpose; devotion.
Example
His dedication laid the foundation of Indian science.
他的奉献为印度科学奠定了基础。
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。
A2 noun /dɪˈlɪv.ə.ri/

Delivery

递送; 分娩
Meaning
the action of delivering letters, parcels, or goods; the process of giving birth
Example
The delivery of the package was delayed due to bad weather conditions.
由于恶劣的天气条件，包裹的递送被延迟。
C1 noun /ˈderˌdevəl/

daredevil

冒险者
Meaning
A person who enjoys doing dangerous or risky things.
Example
The stunt was performed by a famous daredevil.
这个特技是由一位著名的冒险者完成的。
A1 noun /ˈdrɪŋkɪŋ/

drinking

喝
Meaning
the act of consuming liquids, especially alcohol
Example
Drinking too much water at once can make you feel bloated.
一次喝太多水可能会让你感到腹胀。
B2 noun daɪˈmen.ʃən

dimension

维度
Meaning
An aspect or feature of a situation, problem, or thing; a measurable extent.
Example
Renewable projects add a new dimension to urban planning.
可再生项目为城市规划增添了一个新的维度。
C2 noun /ˌdɪsæprəˈbeɪʃən/

disapprobation

强烈反对
Meaning
strong disapproval, typically on moral grounds
Example
The policy was met with widespread disapprobation.
该政策遭遇了广泛的反对。
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。
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。
B1 noun /ˌdiː.enˈeɪ/

dna

脱氧核糖核酸
Meaning
Deoxyribonucleic acid, the molecule that carries genetic information in living organisms.
Example
Scientists extracted DNA from the ancient bones.
科学家从古代骨头中提取了DNA。
B1 verb /daɪn/

dine

用餐
Meaning
to eat a meal, especially the main meal of the day
Example
We usually dine at seven o'clock in the evening.
我们通常在晚上七点用餐。
C2 adjective /dɪˈdjuːsəbl/

deducible

可推断的
Meaning
able to be deduced; possible to be inferred
Example
The solution is deducible from the data provided.
解决方案可以从提供的数据中推断出来。
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 /ˈdaʊ.ər/

dour

严厉
Meaning
relentlessly severe, stern, or gloomy in manner or appearance
Example
His dour expression made the meeting uncomfortable.
他严厉的表情让会议变得不舒服。
C1 noun ˈdɛf.ər.əns

deference

尊敬
Meaning
Humble submission and respect.
Example
He showed deference to his elderly mentor.
他向他的老年导师表示尊敬。
B1 verb /dɪˈfiːt/

Defeat

失败
Meaning
to win a victory over; to overcome in battle or competition
Example
The army managed to defeat the enemy forces.
军队成功击败了敌军。
C1 verb /dɪsˈkʌlər/

discolor

褪色
Meaning
to change color, especially in a way that spoils the original appearance
Example
The fabric began to discolor after being left in the sun.
织物在阳光下被放置后开始褪色。
B2 adjective /dɪˈstɜː.bɪŋ/

disturbing

令人不安
Meaning
causing anxiety, worry, or emotional distress
Example
The news about the accident was deeply disturbing.
关于事故的新闻令人深感不安。
B2 noun /ˈdʌklɪŋ/

duckling

Meaning
a young duck
Example
The mother duck led her ducklings to the pond.
C2 adjective /ˌdɛl.ɪˈtɪə.ri.əs/

deleterious

有害的
Meaning
Causing physical or mental harm or damage.
Example
Smoking has deleterious effects on health.
吸烟对健康有害。
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。
B2 noun /ˈdrɔː.bæk/

Drawback

缺点; 不利因素; 问题
Meaning
a feature that renders something less acceptable; a disadvantage or problem
Example
The main drawback of living in the city is the high cost of housing.
住在城市的主要缺点是高昂的住房成本。
B2 noun /ˌdel.ɪˈɡeɪ.ʃən/

delegation

代表团
Meaning
A group of people chosen to represent others in negotiations or discussions.
Example
The delegation presented their country's agenda.
代表团提出了他们国家的议程。
C2 noun /dɪˈdʒɛnərəsi/

degeneracy

堕落
Meaning
The state of decline or deterioration, often in moral, cultural, or physical qualities.
Example
The novel portrays the moral degeneracy of a corrupt society.
这部小说描绘了一个腐化社会的道德堕落。
B1 noun dɛt

debt

债务
Meaning
A sum of money that is owed or due.
Example
High levels of debt can lead to a financial crisis.
高债务水平可能导致金融危机。
C1 adjective /daɪˈvɜːrsɪfaɪd/

diversified

多样化的
Meaning
Made or having variety in form, nature, or content.
Example
The company adopted a diversified business strategy to reduce risks.
公司采纳了多样化的商业战略来降低风险。
B2 noun /ˈdɛltə/

delta

三角洲
Meaning
A landform at the mouth of a river where it splits into several outlets.
Example
The Nile Delta is one of the most fertile regions in Egypt.
尼罗河三角洲是埃及最肥沃的地区之一。
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。
B2 noun/verb /dɪˈvɔːrs/

divorce

离婚
Meaning
the legal ending of a marriage; to officially end a marriage
Example
After years of conflict, they decided to get a divorce.
经过多年的冲突，他们决定离婚。
B2 verb /dɪsˈkloʊz/

disclose

披露
Meaning
to reveal or make information known; to expose
Example
The company must disclose all financial information.
公司必须披露所有的财务信息。
B2 noun /djuː/

Dew

露水
Meaning
tiny drops of water that form on cool surfaces at night when atmospheric water vapour condenses
Example
The morning dew glistened on the grass.
早晨的露珠在草地上闪闪发光。
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 /dɪsˈlɛksiə/

dyslexia

阅读障碍
Meaning
A learning disorder characterized by difficulty reading due to problems identifying speech sounds and decoding words.
Example
The teacher used special methods to help the student with dyslexia.
老师使用了特殊的方法来帮助患有阅读障碍的学生。
B1 adjective /drəˈmæt.ɪk/

Dramatic

戏剧性的; 突然且惊人; 激动人心且印象深刻
Meaning
relating to drama; sudden and striking; exciting and impressive
Example
The dramatic sunset painted the sky in brilliant colors.
戏剧性的日落将天空涂上了明亮的色彩。
C2 adjective /ˌdaɪəˈlɛktɪkəl/

dialectical

辩证
Meaning
Relating to the logical discussion of ideas and opinions.
Example
She took a dialectical approach to solve the complex issue.
她采取了辩证的方法来解决这个复杂的问题。
B1 noun /dɪsk/

disk

磁盘 / 数据存储设备
Meaning
a flat, circular object, often used to store data electronically
Example
All the data is saved on a hard disk.
所有数据都保存在硬盘上。
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。
C2 verb /dɪˈfoʊlieɪt/

defoliate

除叶
Meaning
to strip leaves from a tree, plant, or area, often using chemicals
Example
The farmers defoliated the fields before harvest.
农民在收获前除叶了田地。
A2 noun /deθ/

Death

死亡
Meaning
the end of life; the permanent cessation of vital functions
Example
The death of the great leader was mourned by the entire nation.
伟大领导人的死亡让整个国家陷入哀悼。
C1 verb /diːˈkoʊd/

decode

Meaning
to convert a coded message into a readable form; to interpret meaning
Example
The software can decode the hidden message within seconds.
C2 noun /dɪˈdʒɛkʃən/

dejection

沮丧
Meaning
a state of sadness, depression, or low spirits
Example
She sat in a state of dejection after hearing the bad news.
她在听到坏消息后，处于一种沮丧的状态。
C2 noun /ˈdɛrɪk/

derrick

钻井塔
Meaning
A framework or tower used for supporting a crane, especially for oil drilling or lifting heavy loads.
Example
The workers assembled a derrick at the oil drilling site.
工人们在石油钻井现场组装了一座钻井塔。
A1 verb/noun /dæns/

dance

幸福
Meaning
to move rhythmically to music, typically following a set sequence of steps
Example
They danced all night at the wedding.
她收到奖项时无法隐藏自己的幸福。
B2 noun /ˈdɛməˌkræt/

democrat

民主党人
Meaning
a supporter of democracy or a member of the Democratic Party in the US
Example
He is a strong democrat who believes in equal rights.
他是一个坚强的民主党人，相信平等的权利。
C1 adjective /ˈdaʊn.kæst/

downcast

Meaning
feeling sad, dejected, or with lowered eyes
Example
He looked downcast after hearing the bad news.
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 noun /ˌdɛsɪˈmeɪʃən/

decimation

大规模摧毁
Meaning
The act of destroying or killing a large proportion of something.
Example
The decimation of the city left thousands homeless.
城市的毁灭使成千上万的人无家可归。
C2 adjective /ˌdɛfəˈrɛnʃəl/

deferential

尊敬的
Meaning
Showing or expressing respect and high regard.
Example
He was always deferential toward his teachers.
他总是对他的老师表现出尊敬。
C1 adjective /ˈdrɪəri/

dreary

沉闷的 / 阴沉的
Meaning
dull, bleak, and lifeless; depressing
Example
The long, dreary winter made everyone feel gloomy.
漫长而阴沉的冬天让每个人都感到沮丧。
C1 verb /daɪˈɡrɛs/

digress

Meaning
To leave the main subject temporarily in speech or writing.
Example
The professor began to digress from the main topic of the lecture.
B2 verb /dɪˈraɪv/

derive

派生
Meaning
To obtain something from a source.
Example
Many English words derive from Latin.
许多英语词汇源自拉丁语。
A2 verb, noun /drɒp/

drop

掉 / 水滴
Meaning
to let something fall; a small quantity of liquid
Example
Be careful not to drop your phone.
小心不要把手机掉了。
C1 noun ˈdɪl.ɪ.dʒəns

diligence

勤奋
Meaning
Careful and persistent work or effort.
Example
Success requires patience and diligence.
成功需要耐心和勤奋。
B2 adjective /daɪˈnæm.ɪk/

dynamic

动态
Meaning
Characterized by constant change, activity, or progress.
Example
Life flows in a dynamic stream.
生活在动态的河流中流动。
C2 noun /daɪˈvʌldʒəns/

divulgence

透露
Meaning
the act of revealing or disclosing something secret or private
Example
The divulgence of company secrets caused a major scandal.
公司机密的透露引发了一场大丑闻。
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 /djuːˈplɪsɪti/

duplicity

虚伪
Meaning
Deceitfulness or double-dealing; dishonesty.
Example
Her duplicity was revealed during the investigation.
她的虚伪在调查中被揭露出来。
B1 adjective /dɪˈtɜːrmɪnd/

determined

决心的
Meaning
Having firmly decided to do something and not letting anything stop you.
Example
She was determined to finish her studies despite many obstacles.
尽管有许多障碍，她还是决心完成她的学业。
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。
C2 noun /dɪˈstreɪnər/

distrainor

财产征收人
Meaning
a person, usually a landlord, who seizes another's property for unpaid debt or rent
Example
The distrainor took possession of the tenant's car until the debt was cleared.
财产征收人扣押了租户的车，直到债务清偿。
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。
C2 adjective /dɪˈsɛnʃənt/

dissentient

持不同政见者
Meaning
Expressing or holding opinions that are opposed to the majority or official view.
Example
Only a few dissentient voices were heard during the debate.
在辩论期间，只听到了少数持不同政见者的声音。
B1 verb /ˈdɛmənˌstreɪt/

demonstrate

展示
Meaning
to clearly show or prove something through evidence, explanation, or action
Example
The teacher demonstrated the experiment to the class.
老师向班级展示了实验。
C1 adjective dɪˈskrɪmɪnətɔːri

discriminatory

歧视性
Meaning
Making or showing an unfair or prejudicial distinction between different categories of people or things.
Example
Discriminatory policies triggered protests.
歧视性政策引发了抗议。
B2 noun /dʌv/

Dove

鸽子
Meaning
a small, gentle bird with soft cooing sounds, often white and symbolizing peace
Example
The white dove flew peacefully across the blue sky.
白鸽平静地飞翔在蓝天上。
C2 noun /ˈdɛswɪˌtuːd/

desuetude

废弃
Meaning
a state of disuse or inactivity
Example
The old law has fallen into desuetude.
旧法律已经废弃。
C2 verb /ˌdɛlɪˈkwɛs/

deliquesce

通过吸收空气中的水分变为液体
Meaning
to become liquid by absorbing moisture from the air
Example
The salt began to deliquesce after being left in the humid room.
盐开始在潮湿的房间里变成液体。
B2 noun dɪˈstrækʃən

distraction

分心
Meaning
Something that prevents concentration or takes attention away from something else.
Example
Distraction during study time can hinder learning.
学习时的分心可能会阻碍学习。
B2 verb /ˌdaɪəɡˈnoʊz/

diagnose

诊断
Meaning
To identify a disease, condition, or problem by examining symptoms.
Example
The doctor diagnosed him with pneumonia.
医生诊断出他患有肺炎。
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

无私
Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
法官在案件中保持无私。
C1 noun /ˌdɪsəˈbiːdiəns/

disobedience

不服从
Meaning
failure or refusal to obey rules, laws, or authority
Example
The child's disobedience worried his parents.
孩子的不服从让父母感到担忧。
C2 adjective /daɪˈdæktɪk/

didactic

教学的
Meaning
Intended to teach, often with a moral lesson.
Example
The novel is not just entertaining but also didactic in nature.
这本小说不仅仅是娱乐性，还有教学性质。
C1 verb /dɪˈsweɪd/

dissuade

劝阻
Meaning
To persuade someone not to do something.
Example
She tried to dissuade him from quitting his job.
她试图劝阻他辞去工作。
C1 noun /ˈded.lɑk/

Dead-lock

死锁; 僵局
Meaning
a situation in which no progress is possible; complete standstill
Example
The negotiations reached a deadlock when neither side would compromise.
谈判陷入僵局，因为没有一方愿意妥协。
B2 noun daɪˈvɜːsɪti

diversity

多样性
Meaning
The state of being diverse; variety.
Example
Biodiversity promotes ecosystem stability and resilience.
生物多样性促进了生态系统的稳定性和恢复力。
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。
A1 preposition /ˈdjʊərɪŋ/

during

期间
Meaning
throughout the course of a period of time
Example
I fell asleep during the movie.
我在看电影的时候睡着了。
B2 noun /ˈdiː.sən.si/

Decency

体面
Meaning
behavior that conforms to accepted standards of morality or respectability
Example
She had the decency to apologize for her mistake immediately.
她有体面，立即为她的错误道歉。
A2 verb /der/

dare

敢
Meaning
to have courage to do something; to challenge someone
Example
I dare you to jump into the pool.
我敢挑战你跳入泳池。
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.
C2 adjective /dɪˈtɜːrmɪnət/

determinate

确定的
Meaning
having exact and definite limits or form
Example
The contract is for a determinate period of two years.
合同是为期两年的确定期限。
A2 noun /daʊt/

Doubt

怀疑; 不信任; 疑虑
Meaning
a feeling of uncertainty or lack of conviction; distrust or suspicion
Example
There was no doubt in her mind that she had made the right decision.
她毫不怀疑自己做出了正确的决定。
B2 adverb /ˈdʌbli/

doubly

双重地
Meaning
in a twofold manner; to twice the degree
Example
She felt doubly fortunate after winning the prize and getting a promotion.
在赢得奖项并获得晋升后，她感到双倍幸运。
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 /ˌdɪp.ləˈmæt.ɪk ˈmaɪl.stəʊn/

diplomatic milestone

外交里程碑
Meaning
A significant achievement or important event in diplomatic relations.
Example
Hosting the summit was a diplomatic milestone.
举办峰会是一个外交里程碑。