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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。
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 noun /dɪˈnaɪ.əl/

Denial

否认
Meaning
the action of declaring something to be untrue; refusal to acknowledge something
Example
His denial of involvement in the scandal was met with skepticism.
他否认参与丑闻的行为，遭遇了怀疑。
C1 verb /dɪˈplɔːr/

deplore

谴责
Meaning
to feel or express strong disapproval of something; to regret deeply
Example
Many people deplore the violence shown on television.
许多人谴责电视上展示的暴力。
A1 verb /duː/

do

做
Meaning
to perform an action; to carry out
Example
I do my homework every evening.
我每天晚上做作业。
B1 verb /dɪˈklɛər/

declare

宣布
Meaning
To announce something formally or officially.
Example
The government declared a state of emergency.
政府宣布了紧急状态。
B2 noun/verb /dræft/

draft

草稿
Meaning
A preliminary version of a piece of writing; to prepare a preliminary version of a document.
Example
She finished the first draft of her novel.
她完成了小说的第一份草稿。
B2 adjective /ˈdaʊt.fəl/

Doubtful

怀疑的; 不确定的; 对某事感到不确定
Meaning
uncertain; questionable; feeling uncertain about something
Example
I am doubtful about the success of this project.
我对这个项目的成功表示怀疑。
C1 verb /ˈdɪsləkeɪt/

dislocate

脱臼
Meaning
To disturb the normal position of something, especially a joint in the body.
Example
He dislocated his shoulder while playing football.
他在踢足球时脱臼了肩膀。
A1 noun /dɔːɡ/

Dog

狗
Meaning
a domesticated carnivorous mammal that is typically kept as a pet or for work
Example
The loyal dog waited patiently for its owner to return home.
忠诚的狗耐心等待它的主人回家。
C2 adjective /daɪˈɡrɛsɪv/

digressive

偏离主要话题的倾向
Meaning
Tending to depart from the main subject in speech or writing.
Example
The speaker's digressive style made the lecture difficult to follow.
演讲者的偏离主题的风格使得听讲变得困难。
B2 noun /ˌdaɪəˈbiːtiːz/

diabetes

幸福
Meaning
a medical condition in which the body cannot properly control the level of sugar in the blood
Example
He was diagnosed with type 2 diabetes last year.
她收到奖项时，无法掩饰自己的幸福。
B2 verb /dɪˈvoʊt/

devote

奉献
Meaning
to give time, effort, or resources to something
Example
She devotes much of her time to helping the poor.
她把大部分时间都奉献给了帮助穷人。
B1 verb /dɪˈvɛləpɪŋ/

developing

发展
Meaning
the process of growing, improving, or becoming more advanced
Example
She is developing new skills in programming.
她正在编程中发展新技能。
C2 adjective /ˌdɪspjuːˈteɪʃəs/

disputatious

爱争辩的
Meaning
fond of or given to argument and debate
Example
His disputatious nature often led to heated conversations.
他争辩的性格常常导致激烈的讨论。
B1 noun /ˈdrɛsɪŋ/

dressing

沙拉酱 / 调味料混合物
Meaning
a sauce for salads; or material used to cover a wound
Example
She prepared a delicious salad with Italian dressing.
她用意大利沙拉酱准备了一道美味的沙拉。
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。
C2 verb /dɪsˈteɪn/

distain

鄙视
Meaning
to treat with scorn or contempt (archaic form of disdain)
Example
He would never distain those who had less fortune than him.
他从未鄙视那些比他更不幸运的人。
A1 noun /deɪ/

Day

天; 日
Meaning
a period of twenty-four hours; the time during which there is light
Example
What a beautiful day it is today with clear blue skies!
今天是个美丽的日子，蓝天晴朗！
C2 noun /ˌdɪskənˈtɪnjʊəns/

discontinuance

停止
Meaning
the act of stopping something, especially permanently
Example
The discontinuance of the service disappointed many customers.
服务的停止让许多客户感到失望。
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。
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。
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。
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。
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。
B1 noun, verb /dɪˈzaɪər/

desire

欲望
Meaning
a strong feeling of wanting something or wishing for something to happen
Example
He has a strong desire to travel the world.
他有强烈的欲望去环游世界。
B2 adjective /dɪsˈɡʌstɪd/

disgusted

厌恶的
Meaning
feeling a strong sense of dislike or revulsion
Example
She was disgusted by the way he treated the animals.
她对他对待动物的方式感到厌恶。
C2 noun /dɪˈpɔːrtmənt/

deportment

举止
Meaning
A person's behavior or manners, especially in a formal situation.
Example
Her deportment during the ceremony impressed everyone.
她在仪式中的举止给大家留下了深刻印象。
C2 adjective /ˌdaɪəˈkrɪtɪkəl/

diacritical

变音符号
Meaning
Relating to a mark added to a letter to indicate a different pronunciation or stress.
Example
The word résumé has diacritical marks that change its meaning from resume.
‘简历’一词有变音符号，它改变了‘简历’的意思。
B2 verb /dɪˈmɒlɪʃ/

demolish

拆除
Meaning
to destroy completely, especially a building or structure
Example
The city decided to demolish the old stadium to build a new one.
这座城市决定拆除旧体育场，建造一个新的。
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。
C2 noun /ˈdræɡˌnɛt/

dragnet

大规模搜捕
Meaning
A systematic search or investigation, often by police to catch criminals.
Example
The police launched a dragnet to capture the fugitives.
警察发起了大规模搜捕，试图抓捕逃犯。
C2 noun /dɛnˈdrɒlədʒi/

dendrology

Meaning
the scientific study of trees and woody plants
Example
He is studying dendrology at the university.
B2 noun /dɪsˈrʌp.ʃən/

disruption

中断
Meaning
Barrier or interruption, sudden disturbance in any process or service.
Example
The road construction caused major disruption in traffic flow.
道路建设导致交通流量的大规模中断。
A2 adjective /duː/

Due

到期的; 预计的; 安排好的
Meaning
owed as a debt; expected at a certain time; scheduled
Example
The assignment is due tomorrow.
作业明天到期。
C1 noun /dɪsˈɪntrəst/

disinterest

冷漠
Meaning
lack of interest or concern
Example
His disinterest in the project was obvious.
他对这个项目的冷漠是显而易见的。
B2 adverb /ˈden.sli/

densely

密集地
Meaning
In a closely compacted or crowded manner.
Example
The area is densely covered with trees.
这个区域密集地覆盖着树木。
B2 noun /ˈdes.tə.ni/

Destiny

命运; 天命; 预定的道路
Meaning
the events that will necessarily happen to someone in the future; fate or predetermined course
Example
She believed that meeting him was her destiny and meant to be.
她相信，遇到他是她的命运，注定要发生。
B2 noun /depθ/

Depth

深度; 深沉或深刻的特质
Meaning
the distance from the top or surface to the bottom; the quality of being intense or profound
Example
The depth of the ocean in this area reaches over three thousand meters.
该地区的海洋深度超过三千米。
A2 verb /drɔː/

draw

画
Meaning
to create pictures or designs with a pencil or pen
Example
She draws beautiful landscapes in her spare time.
她在空闲时间画美丽的风景。
B1 noun /dɪˈstrʌk.ʃən/

Destruction

破坏; 毁灭;
Meaning
the action or process of causing damage to something so that it no longer exists
Example
The earthquake caused widespread destruction throughout the entire city.
地震在整个城市造成了广泛的破坏。
C2 noun /ˈdaɪˌsɪləbəl/

disyllable

双音节词
Meaning
a word consisting of two syllables
Example
The word 'happy' is a disyllable.
‘幸福’这个词是一个双音节词。
C2 verb /ˈdɒɡmətaɪz/

dogmatize

教条化
Meaning
To state opinions or beliefs as if they were absolute truths.
Example
The professor tended to dogmatize on political issues.
教授倾向于在政治问题上教条主义。
C2 adjective /dɪsˈkɒnsələt/

disconsolate

无法安慰的
Meaning
very unhappy and unable to be comforted
Example
She was disconsolate after hearing the bad news.
听到坏消息后，她感到无法安慰。
B2 verb /dɪˈtekt/

detect

检测
Meaning
to discover or identify the presence or existence of something; to notice something that is not immediately obvious
Example
The security system can detect movement in the building.
安全系统可以检测到建筑物内的运动。
C2 adjective /dɪsˈkʌmfɪtɪŋ/

discomfiting

令人不安
Meaning
Causing unease, embarrassment, or discomfort.
Example
His discomfiting questions made everyone shift uncomfortably in their seats.
他那令人不安的问题让大家在座位上不舒服地动来动去。
C2 noun /ˌdɪsəˈvaʊəl/

disavowal

否认
Meaning
the denial of any responsibility, connection, or support
Example
The politician issued a firm disavowal of the controversial remarks.
该政治家对有争议的言论发表了强烈的否认。
A2 adjective /ˈdɜː.ti/

Dirty

脏的; 沾有污渍的; 不愉快的; 道德败坏的
Meaning
not clean; covered with dirt; unpleasant; morally corrupt
Example
The kitchen was dirty after cooking.
做饭后厨房是脏的。
C2 noun /dɪˈpoʊnənt/

deponent

证人
Meaning
A person who gives testimony under oath, especially in a written deposition.
Example
The deponent confirmed the accuracy of the statement during the trial.
证人在审判期间确认了陈述的准确性。
B2 noun /ˈdef.ə.sɪt/

Deficit

赤字; 不足
Meaning
the amount by which something is too small; a shortfall or lack
Example
The government faced a budget deficit of millions due to increased spending.
由于支出的增加，政府面临着数百万的预算赤字。
C1 adjective /dɪˈstrɔːt/

distraught

心烦意乱
Meaning
extremely upset and anxious, often to the point of being unable to think clearly
Example
She was distraught after losing her pet.
她在失去宠物后非常心烦意乱。
B2 noun /dɪsˈpoʊzl/

disposal

处置
Meaning
the action or process of getting rid of something
Example
The disposal of waste is crucial for maintaining a clean environment.
废物处理对于保持清洁的环境至关重要。
C1 adjective /dɪˈskrɪmɪˌneɪtɪŋ/

discriminating

挑剔的
Meaning
Having refined taste or good judgment; able to recognize subtle differences.
Example
She is known for her discriminating taste in art.
她以自己在艺术上的挑剔眼光而闻名。
C2 verb /dɪˈsɛmbəl/

dissemble

假装
Meaning
to conceal one's true motives, feelings, or beliefs; to pretend
Example
He tried to dissemble his anger with a forced smile.
他试图用强颜欢笑来掩饰自己的愤怒。
C2 noun /dæmˈneɪ.ʃən/

Damnation

永恒的惩罚; 破坏
Meaning
condemnation to eternal punishment in hell; something that causes ruin or failure
Example
The preacher spoke about salvation and damnation in his sermon.
传教士在他的讲道中谈到了救赎和诅咒。
C2 verb /dɪˈkæpɪteɪt/

decapitate

幸福
Meaning
To cut off the head of a person or animal.
Example
The ancient executioner decapitated the criminal.
她在收到奖项时无法掩饰她的幸福感。
C1 noun /deɪˈbɑː.kəl/

debacle

灾难
Meaning
A sudden and ignominious failure; a fiasco.
Example
The company's poor management led to a financial debacle.
公司的糟糕管理导致了财政灾难。
C2 noun /doʊlt/

dolt

傻瓜
Meaning
A stupid or slow-witted person.
Example
Only a dolt would believe such a story.
只有傻瓜才会相信这样的故事。
C2 noun /ˌdaɪvəˈɡeɪʃən/

divagation

偏离
Meaning
digression; wandering from a path or subject
Example
His lecture was full of divagation, making it hard to follow the main point.
他的演讲充满了偏离主题的内容，使得很难跟上主要论点。
C1 noun /ˌdɪs.əˈreɪ/

disarray

混乱
Meaning
A state of disorganization or untidiness; confusion or disorder.
Example
His desk was in complete disarray.
他的桌子完全处于混乱状态。
C2 noun /dɪˈsɛmbələr/

dissembler

伪君子
Meaning
a person who conceals their real feelings or intentions; a hypocrite or pretender
Example
The politician was accused of being a dissembler who never revealed his true plans.
那位政治家被指控是一个从不透露自己真实计划的伪君子。
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。
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。
A2 noun /dəˈrɛkʃən/ or /daɪˈrɛkʃən/

direction

方向, 指令
Meaning
the course or path on which someone or something is moving; instructions on what to do
Example
He asked for directions to the train station.
他询问了去火车站的方向。
B2 noun /dɪˈpləʊməsi/

diplomacy

Meaning
The profession, activity, or skill of managing international relations or handling affairs tactfully.
Example
Effective diplomacy helped avoid the conflict.
A2 noun /dɪˈsɪʒənz/

decisions

决定
Meaning
A conclusion or resolution reached after consideration; the action or process of deciding something.
Example
Making the right decisions in time was key to the project's success.
及时做出正确的决定是项目成功的关键。
C1 verb /dɪˈspɜːrs/

disperse

驱散
Meaning
To scatter or spread widely in different directions.
Example
The police used tear gas to disperse the crowd.
警方使用催泪瓦斯驱散人群。
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。
B1 noun /dɒt/

dot

点
Meaning
a small round mark or spot
Example
She drew a red dot on the paper.
她在纸上画了一个红点。
B2 noun daɪˈlem.ə

dilemma

困境, 难题
Meaning
A situation in which a difficult choice has to be made between two or more alternatives.
Example
She faced a moral dilemma at work.
她在工作中面临道德困境。
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 adjective /ˈdaɪɪŋ/

Dying

临终; 即将死亡;
Meaning
approaching death; in the process of dying; fading away
Example
The dying plant needs water immediately.
临终的植物需要立即浇水。
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。
B2 adjective daɪˈvɜːs

diverse

多样的
Meaning
Showing a great deal of variety; very different.
Example
Diverse industries enhance economic resilience.
多样化的产业增强了经济韧性。
C1 noun /ˈdaʊn.pɔːr/

Downpour

大雨; 突如其来的暴雨
Meaning
a heavy fall of rain; a sudden heavy rainfall
Example
The sudden downpour caught everyone off guard and soaked the outdoor event.
突如其来的暴雨让所有人措手不及，淋湿了户外的活动。
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 /ˈdaɪətraɪb/

diatribe

激烈的抨击
Meaning
A forceful and bitter verbal attack against someone or something.
Example
The politician launched a diatribe against his opponents.
这位政治家对他的对手发起了激烈的抨击。
C1 noun /daɪˈsɛkʃən/

dissection

解剖
Meaning
the act of cutting apart or analyzing something in detail, especially a body or structure
Example
The dissection of the specimen revealed important details about its structure.
样本的解剖揭示了关于其结构的重要细节。
C2 adjective /djuːˈplɪsɪtəs/

duplicitous

虚伪的
Meaning
Deceitful; deliberately deceptive or dishonest.
Example
The politician was criticized for his duplicitous statements.
这位政治家因其虚伪的言论而受到批评。
B1 adjective /ˈdɪstənt/

Distant

遥远的
Meaning
far away in space or time; remote
Example
We could see a distant mountain on the horizon.
我们可以看到地平线上远处的山。
C1 adjective /ˌdɪfəˈrɛnʃəl/

differential

差异的
Meaning
Relating to or showing a difference; involving a distinction.
Example
There is a differential treatment between the two groups.
这两个群体之间存在差异待遇。
C2 noun /ˌdɪfəˈrɛnʃə/

differentia

区分特征
Meaning
A distinguishing characteristic that sets one thing apart from another.
Example
The differentia of humans is their ability to reason abstractly.
人类的区分特征是他们的抽象思维能力。
C1 noun /djuːˈɛt/

duet

二重奏
Meaning
a musical performance by two singers or instrumentalists
Example
They sang a beautiful duet together on stage.
他们在舞台上共同演唱了一首美丽的二重奏。
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 adjective /ˈdɑːsəl/ or /ˈdəʊsaɪl/

docile

顺从的
Meaning
easily managed, taught, or controlled; submissive
Example
The docile puppy quickly learned new tricks.
顺从的小狗很快学会了新把戏。
C1 adjective /dɪsˈdʒɔɪntɪd/

disjointed

支离破碎
Meaning
Lacking order, coherence, or connection; disconnected.
Example
The movie felt disjointed and hard to follow.
这部电影感觉支离破碎，很难跟上。
C1 noun /ˌdɛrɪˈveɪʃən/

derivation

衍生
Meaning
The origin or development of something from a source.
Example
The derivation of the word comes from Latin.
这个词的词源来自拉丁语。
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。
B2 noun /doʊs/

dose

剂量
Meaning
a measured amount of a medicine or drug taken at one time
Example
The doctor prescribed one dose of the medicine every six hours.
医生每六小时开一次药物的剂量。
A1 noun /dres/

Dress

裙子
Meaning
a piece of clothing for women or girls that covers the body and extends down over the legs
Example
She wore a beautiful blue dress to the party.
她穿了一件漂亮的蓝色裙子参加派对。
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。
B1 adjective /dɪsˈeɪbld/

disabled

残疾
Meaning
having a physical or mental condition that limits movements, senses, or activities
Example
The park has special facilities for disabled people.
公园有专为残疾人士设计的设施。
C2 noun /ˌdiːlɛkˈteɪʃən/

delectation

愉悦
Meaning
great pleasure or delight
Example
She read the story aloud for the delectation of her friends.
她大声朗读故事，以供朋友们的愉悦。
C1 noun /ˈdɛspɒt/

despot

暴君
Meaning
a ruler with absolute power, often ruling in a cruel or oppressive way
Example
The despot ruled the nation with fear and violence.
暴君以恐惧和暴力统治国家。
B2 noun /ˈdeb.ɪt/

Debit

借方; 负债; 提款
Meaning
an entry recording an amount owed; money taken from a bank account
Example
The bank showed a debit of fifty dollars from my checking account.
银行显示从我的支票账户中扣除五十美元。
B2 noun /ˈdɛpjʊti/

deputy

代理人
Meaning
A person appointed as a substitute with power to act.
Example
The deputy will lead the meeting in the manager’s absence.
代理人在经理缺席时将主持会议。
C2 noun /ˌdɪsɪnklɪˈneɪʃən/

disinclination

不愿意
Meaning
a lack of willingness or desire to do something
Example
She showed a clear disinclination to join the meeting.
她表现出明显的不愿意参加会议。
B1 noun /dɪsk/

disc

平坦、薄且圆的物体
Meaning
a flat, thin, round object or surface
Example
He inserted the music disc into the player.
他把音乐碟片插入了播放器。
B2 noun /dæm/

Dam

大坝; 水库;
Meaning
a barrier constructed to hold back water and raise its level; a female parent of an animal
Example
The massive dam provides electricity and controls flooding in the region.
巨大的大坝为该地区提供电力，并控制洪水。
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。
B2 verb /dɪˈspaɪz/

despise

鄙视
Meaning
to regard with contempt; to hate strongly
Example
She despises dishonesty in all its forms.
她鄙视所有形式的不诚实。
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。
C2 noun /dɪˈtrækʃən/

detraction

贬低
Meaning
The act of belittling or taking away from the value of something.
Example
Her constant detraction of others made her unpopular.
她对他人的不断贬低使她变得不受欢迎。
C2 noun /ˈdæstərd/

dastard

懦夫
Meaning
a cowardly or dishonorable person
Example
Only a dastard would betray his closest friend.
只有懦夫才会背叛自己最亲密的朋友。
C1 noun /ˈdaʊri/

dowry

嫁妆
Meaning
Property or money brought by a bride to her husband at marriage.
Example
The dowry tradition is still followed in some cultures.
一些文化仍然遵循嫁妆的传统。
C1 verb /dʌb/

dub

配音
Meaning
to give a name or label to something; to add a soundtrack to a film or recording
Example
The movie was dubbed into several languages for international release.
这部电影为国际发行而配音成多种语言。
C2 noun /ˈdændi/

dandy

过度注重外貌和衣着的男人
Meaning
a man who gives too much attention to his appearance and clothes
Example
The young dandy spent hours grooming himself before the party.
年轻的丹迪在聚会前花了几个小时打理自己。
B2 noun /duːm/

doom

厄运
Meaning
A terrible fate, destruction, or unavoidable bad outcome.
Example
The ancient prophecy foretold the city’s doom.
古老的预言预示了这座城市的厄运。
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 /ˈdɛmənˌstreɪtər/

demonstrator

示范者, 抗议者
Meaning
a person who shows how something works or takes part in a public protest
Example
The demonstrators marched peacefully through the city streets.
示威者和平地穿过城市街道游行。
C2 noun /ˈdɒɡərəl/

doggerel

低俗诗句
Meaning
Comic or irregular verse, often poorly constructed and lacking in artistic quality.
Example
The poet’s work was dismissed as mere doggerel by the critics.
诗人的作品被评论家视为单纯的低俗诗句。
B1 noun /ˌdɛfɪˈnɪʃən/

definition

定义
Meaning
a statement that explains the meaning of a word or concept
Example
The dictionary gives a clear definition of the word.
字典给出了这个词的明确定义。
B2 noun /ˈdiː.lɪŋ/

Dealing

交易; 对待; 事务处理
Meaning
business transactions; the way of treating people or handling situations
Example
His fair dealing with customers earned him an excellent reputation.
他与客户的公平交易为他赢得了极好的声誉。
B1 adverb /ˈdaʊnwədz/

Downwards

向下
Meaning
towards a lower place or position; in a downward direction
Example
The ball rolled downwards along the slope.
球沿坡道向下滚动。
B2 adverb dɪˈlɪb.ər.ət.li

deliberately

故意
Meaning
Consciously and intentionally; on purpose.
Example
The actions were deliberately planned to cause harm.
这些行动是故意计划的，以造成伤害。
A2 noun /ˈdɒŋ.ki/

Donkey

驴子
Meaning
a domesticated animal related to the horse, with long ears and a braying call
Example
The donkey carried heavy bags up the mountain.
驴子把重袋子背到山上。
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。
C1 adjective ˈdɪs.pər.ət

disparate

截然不同
Meaning
containing elements very different from one another.
Example
Their opinions were disparate, leading to debates.
他们的意见截然不同，导致了辩论。
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。
B2 adjective daɪˈdʒes.tɪv

digestive

消化的
Meaning
Relating to the digestion of food.
Example
Digestive enzymes help break down food.
消化酶帮助分解食物。
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.