ruminant
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C2 noun /ˈruː.mɪ.nənt/

ruminant

反刍动物
Meaning
a cud-chewing mammal, such as a cow or sheep
Example
Cows are ruminants that chew cud.
牛是反刍动物，它们会反复咀嚼食物。
C2 verb /ˈrævɪʃ/

ravish

迷住
Meaning
To fill with intense delight; to captivate or enchant.
Example
The beauty of the sunset ravished the travelers.
日落的美丽让旅行者陶醉。
C2 noun /ˈdɛkəˌlɔːɡ/

decalogue

Meaning
The Ten Commandments in the Bible; a set of fundamental rules or principles.
Example
The priest gave a sermon on the importance of the Decalogue.
C2 verb /ˈhɛnˌpɛk/

henpeck

Meaning
To continually criticize, nag, or dominate (especially a husband).
Example
He felt henpecked by his overly controlling wife.
C2 noun /ˈpɑr.bəl/

Parbal

尖瓜
Meaning
A green vegetable also known as pointed gourd, commonly used in South Asian cuisine
Example
Mother prepared parbal curry with fish.
母亲做了带鱼的尖瓜咖喱。
C2 noun /kəˈnɑːrd/

canard

Meaning
a false or unfounded story or rumor
Example
The article turned out to be nothing more than a canard.
C2 noun /sɛnˈsɔːrɪəm/

sensorium

感觉中枢
Meaning
The part of the brain or mind concerned with the reception and interpretation of sensory stimuli.
Example
The patient’s sensorium was clouded after the accident.
事故后，病人的感觉中枢受到干扰。
C2 adjective ˌpɜː.spɪˈkeɪ.ʃəs

perspicacious

敏锐的
Meaning
Having keen insight and understanding; showing acute mental discernment.
Example
The detective's perspicacious nature helped solve the mystery.
侦探的敏锐本性帮助解决了谜题。
C2 noun /mɛnˈdæsəti/

mendacity

虚伪
Meaning
the tendency to be untruthful; dishonesty
Example
The journalist exposed the mendacity of the officials.
记者揭露了官员的虚伪。
C2 noun /ˈplɛbɪsaɪt/

plebiscite

公民投票
Meaning
a direct vote by the electorate on an important public question
Example
The government held a plebiscite to decide on the new constitution.
政府举行了公民投票，决定新的宪法。
C2 noun /ˈkɒn.tjʊ.mə.si/

contumacy

不服从, 固执
Meaning
stubborn refusal to obey authority
Example
His contumacy led to his suspension from the council.
他的不服从导致他被从委员会中停职。
C2 adjective /pɪˈskætɔːrɪəl/

piscatorial

与捕鱼相关
Meaning
relating to fishing or fishermen
Example
He has a deep knowledge of piscatorial techniques and fish species.
他对捕鱼技术和鱼种有深刻的了解。
C2 noun /ˈpæsɪt/

Passet

奶酪
Meaning
Fresh cheese curds; cottage cheese made from curdled milk
Example
The cook prepared fresh passet by curdling warm milk with lemon juice.
厨师通过用柠檬汁凝固温热的牛奶，制作了新鲜的奶酪。
C2 noun /ˈɡrɑːtoʊ/

grotto

洞窟
Meaning
a small picturesque cave, often artificial
Example
Tourists visited the grotto hidden behind the waterfall.
游客参观了隐藏在瀑布后的洞窟。
C2 noun /ˈsɛpəlˌtʃər/

Sepulture

坟墓; 埋葬;
Meaning
the act of burying a dead body; burial; a grave or tomb
Example
The ancient king's sepulture was discovered by archaeologists.
古代国王的坟墓被考古学家发现。
C2 verb /dɪˈlæpɪdeɪt/

dilapidate

衰败
Meaning
To cause something, especially a building, to fall into ruin or disrepair.
Example
The abandoned house began to dilapidate over the years.
那座废弃的房子在多年的时间里开始衰败。
C2 adjective /əˈpɜːrtənənt/

appurtenant

附属
Meaning
Belonging to or associated with something, often used in legal/property contexts.
Example
The right of way is appurtenant to the landowner’s property.
通行权属于土地所有者的财产。
C2 noun /ˌfɔːrɔːrdɪˈneɪʃən/

foreordination

预定
Meaning
the act of determining something in advance; predestination
Example
The doctrine of foreordination suggests that events are fixed by divine will.
预定论教义认为，事件是由神的意志所决定的。
C2 noun /ˈpruːdəri/

prudery

Meaning
the behavior or attitude of people who are too easily shocked or offended by sexual matters
Example
His prudery often made others uncomfortable during open discussions.
C2 noun/adjective /rɪˈmɒnstrənt/

remonstrant

抗议者
Meaning
A person who makes a forceful protest (noun); protesting or objecting (adjective).
Example
He was a remonstrant voice in the assembly.
他是会议中的抗议声音。
C2 verb /ɪkˈspɒstjʊleɪt/

expostulate

表示不同意见
Meaning
to express strong disapproval or disagreement
Example
She expostulated with her friend about the risky decision.
她对她朋友关于冒险决定的看法表达了不同意见。
C2 adverb /ˌɪnsəʊˈmʌtʃ/

insomuch

如此
Meaning
to such an extent
Example
He was insomuch tired that he could hardly stand.
他累得几乎站不起来。
C2 noun /ˈmʌrɪn/

murrain

牲畜的传染病
Meaning
An infectious disease that affects cattle and other animals, often fatal.
Example
The farmer lost many cows during the outbreak of murrain.
农民在穆雷恩疫情爆发期间失去了许多牛。
C2 noun /ˈtɒksɪn/

tocsin

警报钟
Meaning
an alarm bell or signal; a warning that something bad is about to happen
Example
The data breach sounded a tocsin for stricter security.
数据泄露响起了警报钟，警示着需要更严格的安全措施。
C2 adjective hjʊˈrɪs.tɪk

heuristic

启发式
Meaning
Enabling a person to discover or learn something for themselves; experimental learning approach.
Example
Teachers use heuristic techniques to encourage self-learning.
教师使用启发式技巧来鼓励自学。
C2 noun /bəˈnæləti/

banality

平凡
Meaning
The condition of being unoriginal, boring, or obvious; trite remark or quality.
Example
The speech was criticized for its banality and lack of originality.
这篇演讲因其平凡和缺乏原创性而受到批评。
C2 adjective /ˈsɪlvən/

sylvan

林地的
Meaning
Relating to or characteristic of the woods or forest.
Example
The cottage was set in a sylvan landscape full of tall trees.
这座小屋位于一个林地的景观中，充满了高大的树木。
C2 noun /əbˈsɪdiən/

obsidian

黑曜石 (黑色的玻璃状火山岩)
Meaning
A hard, dark, glasslike volcanic rock formed by rapid solidification of lava.
Example
The knife was made from sharp obsidian.
刀是由锋利的黑曜石制成的。
C2 noun /ˌmɪstɪfɪˈkeɪʃən/

mystification

困惑, 神秘化
Meaning
the act of making something unclear or confusing; a state of being puzzled or bewildered
Example
The audience watched in mystification as the magician performed his tricks.
观众在困惑中看着魔术师表演他的戏法。
C2 verb /ɪnˈkʌmbər/

encumber

负担
Meaning
to burden or weigh down something, making it difficult to move or progress
Example
She was encumbered by the heavy luggage during her journey.
她在旅行中因沉重的行李而感到负担沉重。
C2 adjective /ˈdæpər/

dapper

整洁而时尚
Meaning
Neat, stylish, and well-dressed in appearance.
Example
He looked very dapper in his new suit.
他穿着新西装看起来非常整洁和时尚。
C2 noun /kərˈmʌdʒən/

curmudgeon

脾气暴躁的老人
Meaning
a bad-tempered, cranky, or irritable person, usually old
Example
The old curmudgeon complained about everything in the neighborhood.
那位脾气暴躁的老人抱怨着邻里的一切。
C2 noun /blæk biː/

Black-bee

黑蜜蜂
Meaning
a large dark-colored bee that makes a loud buzzing sound
Example
The black-bee was buzzing around the flowers in the garden.
黑蜜蜂在花园里的花丛中嗡嗡作响。
C2 adjective /ˈvɛntrəl/

ventral

腹侧的
Meaning
relating to the underside or abdominal part of an animal or organ
Example
The fish has a white ventral surface.
鱼的腹侧表面是白色的。
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。
C2 noun /ˈpiːs ɡʊdz/

Piece-goods

布料
Meaning
textiles or fabrics sold by the yard or meter; cloth materials
Example
The tailor bought piece-goods from the wholesale market to make custom dresses.
裁缝从批发市场购买了布料来制作定制的衣服。
C2 noun /ˌsuːpərɪnˈtɛndəns/

superintendence

监督
Meaning
the act of overseeing, supervising, or managing
Example
The superintendence of the school is the principal’s duty.
学校的监督是校长的责任。
C2 noun /ˈpʌlkrɪˌtjuːd/

pulchritude

美丽
Meaning
physical beauty
Example
The actress was admired for her pulchritude as well as her talent.
这位女演员因她的美丽和才华而受到钦佩。
C2 noun /ˈhʌstɪŋz/

hustings

竞选活动
Meaning
the political campaigning and speeches before an election
Example
The candidate gained popularity during the hustings.
候选人在竞选活动期间赢得了人气。
C2 noun /ˈtaɪroʊ/

tyro

新手
Meaning
A beginner or novice in a field or activity.
Example
As a tyro in programming, she needed constant guidance.
作为编程的新手，她需要不断的指导。
C2 noun /ˈtrʌmpəri/

trumpery

毫无价值的废话或浮华但无价值的东西
Meaning
worthless nonsense or showy but worthless things
Example
The speech was full of political trumpery.
这个演讲充满了政治废话。
C2 noun /prɪˈsɛʃən/

precession

进动
Meaning
The slow movement of the axis of a spinning body around another axis, often referring to Earth's rotation.
Example
Astronomers study the precession of the equinoxes.
天文学家研究春分点的进动。
C2 adjective /ˌɪrɪˈlɪdʒəs/

irreligious

不信教的
Meaning
Indifferent or hostile to religion
Example
Some people in the community consider him irreligious because he never attends religious services.
社区中的一些人认为他不信教，因为他从不参加宗教服务。
C2 adjective /sɪmˈfoʊniəs/

symphonious

Meaning
Harmonious; producing a pleasant sound or agreement of sound.
Example
The choir's voices were symphonious and filled the hall with beauty.
C2 noun /ˌθɜː.məʊˈdʒen.ɪ.sɪs/

thermogenesis

热量生产过程
Meaning
The process of heat production in living organisms, often associated with burning calories and energy expenditure.
Example
Spicy foods can enhance thermogenesis and calorie burning.
辛辣食物可以增强热生热和卡路里燃烧。
C2 adjective /ˌɑːrbəˈrɛsənt/

arborescent

树状的
Meaning
having the appearance or characteristics of a tree; tree-like
Example
The coral had an arborescent form that resembled a miniature forest.
珊瑚有一种树状的形态，看起来像一个小型森林。
C2 noun /njʊˈrældʒə/

neuralgia

神经痛
Meaning
intense, often intermittent pain along a nerve pathway
Example
The patient suffers from neuralgia in her face.
病人面部患有神经痛。
C2 adjective /ˈdɛprɪkətɔːri/

deprecatory

贬低的
Meaning
expressing disapproval or belittling
Example
He gave a deprecatory remark about their performance.
他对他们的表现做出了贬低的评论。
C2 verb /juˈzɜrp/

usurp

篡位
Meaning
to take someone's position of power illegally or by force
Example
The general tried to usurp the king's throne.
将军试图篡夺国王的王位。
C2 verb /ˈmæk.ɪ.neɪt/

machinate

策划
Meaning
to engage in plots or schemes, usually for harmful or evil purposes
Example
The rebels tried to machinate against the king.
叛乱者试图反对国王密谋。
C2 noun /ˈfrɛʃɪt/

freshet

突然的河流泛滥
Meaning
A sudden overflow of a stream or river caused by heavy rain or melting snow.
Example
After the storm, the river turned into a raging freshet.
暴风雨过后，河流变成了猛烈的freshet。
C2 noun /ˈbroʊɡən/

brogan

厚重鞋
Meaning
A heavy, sturdy shoe, often made of leather.
Example
The farmer wore old brogans while working in the field.
农民在田间工作时穿着旧布罗根鞋。
C2 noun /ˈblʌfər/

bluffer

虚张声势的人
Meaning
a person who pretends to be more confident, skilled, or knowledgeable than they really are; someone who deceives others by bluffing
Example
Everyone eventually realized that he was just a bluffer with no real experience.
大家最终意识到他只是个虚张声势的人。
C2 verb /ˈɪmprɪkeɪt/

imprecate

诅咒
Meaning
To utter a curse or invoke evil upon someone.
Example
The old woman imprecated her enemies with dark words.
老女人用黑暗的词语诅咒她的敌人。
C2 adjective ˌmɔː.fəˈlɒdʒ.ɪ.kəl

morphological

与词汇结构和构成有关
Meaning
Related to the structure and formation of words; concerning morphology in linguistics.
Example
Morphological analysis helps AI understand word structures.
形态学分析帮助人工智能理解单词结构。
C2 adjective /rɪˈmiːdiəbl/

remediable

可修复的
Meaning
capable of being corrected or cured
Example
The mistake was serious but still remediable.
这个错误很严重，但仍然是可修复的。
C2 noun /ˈpɑːrvənuː/

parvenu

新富人
Meaning
A person who has recently gained wealth or influence but is not yet accepted socially.
Example
He was seen as a parvenu who lacked refinement despite his riches.
他被视为一个新富阶层，尽管他拥有财富，但却缺乏 refinement。
C2 adjective /ʌnˈflæpəbəl/

unflappable

冷静沉着
Meaning
calm and composed, especially in difficult situations
Example
Despite the crisis, he remained unflappable and confident.
尽管面临危机，他依然保持冷静沉着，充满自信。
C2 verb /ˈdʒaɪreɪt/

gyrate

快速旋转
Meaning
to move or spin quickly in circles
Example
The dancer gyrated wildly to the rhythm of the drums.
舞者随着鼓点疯狂旋转。
C2 noun /ˈʌndərlɪŋ/

underling

下属
Meaning
a person of low rank or importance; a subordinate
Example
The manager ordered his underlings to finish the task quickly.
经理命令他的下属快速完成任务。
C2 noun /bænˈdænə/

bandanna

大彩色头巾
Meaning
A large, often brightly colored handkerchief, typically worn on the head or around the neck.
Example
He tied a red bandanna around his neck.
他把一条红色的头巾绑在脖子上。
C2 verb /bɪˈwɪtʃ/

bewitch

迷住
Meaning
to enchant or fascinate someone as if by magic
Example
The dancer's performance bewitched the audience.
舞蹈家的表演迷住了观众。
C2 noun /ˈæpəˌθɛm/

apothegm

格言, 名言
Meaning
A short, witty, and instructive saying or maxim.
Example
His speech was filled with apothegms about life and success.
他的演讲充满了关于生活和成功的格言。
C2 noun /ˈwɔːrˌmʌŋɡər/

warmonger

战争煽动者
Meaning
A person who advocates or promotes war or conflict.
Example
The leader was criticized as a warmonger by his opponents.
这位领导人被对手批评为战争煽动者。
C2 noun /juːˌtɪlɪˈtɛəriənɪzəm/

utilitarianism

功利主义
Meaning
The ethical theory that actions are right if they are useful or for the benefit of the majority.
Example
Utilitarianism suggests that we should act to maximize overall happiness.
功利主义认为我们应该采取行动，以最大化整体幸福。
C2 noun /ɪnˈsɪɡniə/

insignia

徽章
Meaning
A badge or symbol that shows rank, position, or membership.
Example
The soldier proudly wore the insignia of his regiment.
士兵自豪地佩戴着他团的徽章。
C2 noun /ˌdɛrɪˈlɪkʃən/

dereliction

失职
Meaning
the state of being abandoned; neglect of duty
Example
The officer was charged with dereliction of duty.
这名官员因失职被指控。
C2 noun /dɪsˈkwaɪɪtjuːd/

disquietude

Meaning
A state of uneasiness, anxiety, or restlessness.
Example
His constant pacing showed his inner disquietude.
C2 noun /blæk ˈkɑːr.də.məm/

Black Cardamom

黑豆蔻
Meaning
a large aromatic spice pod with a smoky flavor, commonly used in Indian and Middle Eastern cooking
Example
Add black cardamom to the curry for a rich, smoky flavor.
在咖喱中加入黑豆蔻，增添丰富的烟熏味。
C2 adjective /ˌdaɪəˈbɒlɪk/

diabolic

魔鬼的
Meaning
Extremely evil or cruel; characteristic of the devil.
Example
The villain devised a diabolic scheme.
反派设计了一个魔鬼的计划。
C2 adjective /ˌɪm.pəˈfɛk.tə.bəl/

imperfectible

不可完美
Meaning
Incapable of being made perfect or complete.
Example
Some human qualities are considered imperfectible.
某些人类特质被认为是不可完美的。
C2 adjective /ʌnˈtɛmpərd/

untempered

失控的
Meaning
not moderated or softened; lacking proper balance or control
Example
The untempered anger of the crowd caused chaos.
人群的失控愤怒引发了混乱。
C2 verb /trænˈspoʊz/

transpose

变换
Meaning
to change the order or position of something
Example
The editor transposed two paragraphs in the article.
编辑在文章中交换了两个段落。
C2 noun /ˈhʌk.stər/

huckster

小商品贩子
Meaning
A person who sells small items aggressively, often in a showy or dishonest way.
Example
The huckster loudly promoted his goods in the busy marketplace.
小商品贩子在繁忙的市场里大声推销他的商品。
C2 noun /ˈbɜːrɡər/

burgher

城市居民 (富裕的中产阶级)
Meaning
A citizen of a town, typically a member of the wealthy middle class.
Example
The burgher was respected as a prosperous merchant in the city.
这个布尔戈被尊敬为城市中的繁荣商人。
C2 noun /ˈsælvər/

salver

银托盘
Meaning
A tray, typically made of silver, used for serving food or drinks.
Example
The butler brought in the tea on a silver salver.
管家将茶水放在银托盘上端来。
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

海绵瓜
Meaning
a fibrous gourd that becomes sponge-like when dried, used for cleaning and in cooking when young
Example
The sponge gourd can be eaten when young or dried to make natural scrubbers.
海绵瓜可以在年轻时食用，或者干燥后制成天然海绵。
C2 verb /ɪnˈfætʃueɪt/

infatuate

迷恋
Meaning
to inspire with an intense but short-lived passion or admiration
Example
He was infatuated with her beauty.
他被她的美貌迷住了。
C2 verb /frɪsk/

frisk

搜查
Meaning
To search a person by patting their clothing to check for concealed items.
Example
The security guard frisked the man at the entrance.
安保人员在入口处搜查了那名男子。
C2 noun /ˈbloʊˌhɑrd/

blowhard

自负的人
Meaning
a person who brags a lot or talks in a boastful way
Example
Everyone avoided the blowhard at the party because he wouldn't stop bragging.
在派对上，大家都避开了那个自负的人，因为他不停地吹嘘。
C2 verb /kruːn/

croon

用柔和、低沉、温柔的声音唱歌或哼歌
Meaning
to sing or hum in a soft, low, and gentle voice
Example
She crooned a lullaby to help the baby fall asleep.
她唱着摇篮曲帮助婴儿入睡。
C2 noun /ruːˈeɪ/

roue

一位沉迷于感官享受的男人
Meaning
A man devoted to a life of sensual pleasure; a debauched man.
Example
The old roue squandered his fortune on gambling and women.
那位年老的鲁埃把他的财富都浪费在赌博和女人身上。
C2 noun /ˈtrɪmnəs/

trimness

整洁
Meaning
the quality of being neat, orderly, or slender and well-proportioned
Example
Her room’s trimness reflected a habit of putting everything back in its place.
她房间的整洁反映出她总是把东西放回原位的习惯。
C2 adjective /ˈɪnmoʊst/

inmost

最深的
Meaning
Situated at the very heart or deepest part; most private or secret.
Example
She revealed her inmost thoughts to her closest friend.
她向她最亲密的朋友透露了她最深的想法。
C2 verb /ˌdɪskəˈmoʊd/

discommode

打扰
Meaning
To cause inconvenience or trouble to someone.
Example
I hope my request does not discommode you.
我希望我的请求不会给你带来不便。
C2 adjective /ˈbæti/

batty

疯狂
Meaning
crazy or eccentric in behavior
Example
The old man down the street is a bit batty but harmless.
街上的老人有点疯狂，但无害。
C2 adjective /ˌsuːpərˈnuːmərɛri/

supernumerary

额外的
Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
这出戏包含了几个额外的演员来填充背景场景。
C2 noun /fəˈlɪsɪti/

felicity

幸福
Meaning
intense happiness; the ability to find appropriate expression for one's thoughts
Example
She was known for her felicity in conversation and cheerful nature.
她因在对话中的幸福和开朗的性格而闻名。
C2 noun /ˈstænʃən/

stanchion

支柱
Meaning
a strong upright bar or post used as support or to control movement
Example
The red rope was attached to the stanchions to guide the crowd.
红色绳子被固定在支柱上以引导人群。
C2 adjective /ˈrɛkriənt/

recreant

懦弱的, 背叛的
Meaning
cowardly or unfaithful to duty
Example
The recreant soldier abandoned his post in fear.
那名懦弱的士兵因恐惧而放弃了他的岗位。
C2 noun /ˌpaɪrəˈmeɪniə/

pyromania

纵火的失控欲望
Meaning
An uncontrollable desire to set things on fire.
Example
The suspect was diagnosed with pyromania after repeated incidents of arson.
嫌疑人在多次纵火事件后被诊断为纵火狂。
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 adjective /əˈbɑː.mə.nə.bəl/

abominable

可憎的
Meaning
causing moral revulsion; extremely unpleasant
Example
The prisoners were kept in abominable conditions.
囚犯们被关押在可憎的条件下。
C2 noun /ˌdʒiː.niˈæl.ə.ti/

geniality

友好
Meaning
the quality of being friendly and cheerful
Example
His geniality made him popular among his colleagues.
他的友好使他在同事中很受欢迎。
C2 noun /ˌmɒnəˈmeɪniə/

monomania

Meaning
Excessive concentration or obsession with a single subject or idea.
Example
His monomania for collecting stamps worried his family.
C2 adjective /dɪˈkɔːrəs/

decourous

得体
Meaning
characterized by propriety, good taste, and proper manners
Example
She maintained a decourous silence during the ceremony.
她在仪式上保持了得体的沉默。
C2 noun /əˈmʊr/

amour

秘密的爱
Meaning
A secret or illicit love affair.
Example
The novel tells the story of a forbidden amour between two characters.
这本小说讲述了两个人物之间的禁忌爱情故事。
C2 noun /naɪˈdʒel.ə/

Nigella

黑孜然
Meaning
small black seeds with a nutty, slightly bitter flavor, also known as black cumin or black seed
Example
Sprinkle nigella seeds on top of the bread before baking.
在面包上撒上黑孜然种子，然后烤制。
C2 verb /əˈbrɪdʒ/

abridge

缩短
Meaning
to shorten a text without losing its meaning
Example
The editor decided to abridge the long novel for young readers.
编辑决定为年轻读者缩短这本长小说。
C2 noun /ˈskɪnˌflɪnt/

skinflint

吝啬鬼
Meaning
a person who spends as little money as possible; a miser
Example
The landlord was such a skinflint that he never repaired anything.
房东是个吝啬鬼，从不修理任何东西。
C2 noun /θrɔːl/

thrall

Meaning
The state of being in someone's power or under strong influence; slavery or bondage.
Example
He was in thrall to the powerful leader.
C2 noun /ˈklævɪkəl/

clavicle

锁骨
Meaning
the collarbone, a long bone that serves as a strut between the shoulder blade and the sternum
Example
He fractured his clavicle in the accident.
他在事故中断了锁骨。
C2 verb /ˈhɑːrtən/

hearten

鼓舞
Meaning
To give courage, confidence, or hope.
Example
The teacher’s encouragement heartened the students.
老师的鼓励给学生们带来了勇气。
C2 adjective /sɪˈnæp.tɪk/

synaptic

突触的
Meaning
Related to the signal transmission process between nerve cells.
Example
Learning strengthens synaptic connections in the brain.
学习增强大脑中的突触连接。
C2 noun /ˈaɪdɪl/

idyll

田园诗般的场景
Meaning
An extremely happy, peaceful, or picturesque episode or scene, often idealized.
Example
Their honeymoon was an idyll on a tropical island.
他们的蜜月是在一个热带岛屿上的田园诗般的场景。
C2 noun /ˈaɪ.sɔːr/

Eyesore

令人不悦的视觉效果; 恶心的景象
Meaning
something that is very ugly and unpleasant to look at
Example
The abandoned building has become an eyesore in the neighborhood.
废弃的建筑已成为社区中的眼中钉。
C2 adjective /ˈkeəwɔːn/

careworn

疲惫且忧虑
Meaning
Showing signs of worry, stress, or exhaustion.
Example
His careworn face revealed years of struggle.
他那张疲惫的脸显示了多年的挣扎。
C2 noun /ˈplɛdʒɔːr/

pledgeor

担保人
Meaning
a person who gives or offers a pledge or security
Example
The bank accepted the jewelry from the pledgeor as collateral for the loan.
银行接受了担保人提供的珠宝作为贷款的担保。
C2 verb /ˈæmərˌtaɪz/

amortize

摊销
Meaning
To gradually reduce or pay off a debt with regular payments.
Example
They plan to amortize the mortgage over 20 years.
他们计划在20年内摊销抵押贷款。
C2 adjective /vɛˈstɪdʒiəl/

vestigial

遗迹的
Meaning
Relating to a small, undeveloped remnant of something that was once much larger or more functional.
Example
Humans have a vestigial tailbone that no longer serves its original purpose.
人类有一个遗迹的尾骨，它不再执行其原始功能。
C2 noun /kɛn/

ken

知识范围
Meaning
one's range of knowledge or understanding
Example
Quantum physics is beyond my ken.
量子物理学超出了我的理解范围。
C2 adjective /ˈɒsiəs/

osseous

骨质的
Meaning
consisting of or turned into bone; bony
Example
The fossil showed osseous structures of the ancient creature.
化石展示了古老生物的骨质结构。
C2 adjective /ˈfrɒθi/

frothy

泡沫丰富
Meaning
Full of or covered with small bubbles; light and insubstantial.
Example
She ordered a cup of frothy cappuccino.
她点了一杯泡沫丰富的卡布奇诺。
C2 noun /oʊˈbeɪsəns/

obeisance

敬礼
Meaning
A gesture of respect such as a bow or curtsy.
Example
They bowed in obeisance to the king.
他们向国王行了敬礼。
C2 noun /ˌɪnjuːˈɛndəʊ/

innuendo

暗示
Meaning
An allusive or oblique remark or hint, typically a suggestive or disparaging one.
Example
The manager's innuendo was directed towards his competitor.
经理的暗示是针对他的竞争对手的。
C2 noun /ˈɪd.i.ə.si/

Idiocy

愚蠢
Meaning
extremely stupid behavior or actions; foolishness
Example
The decision to ignore safety protocols was pure idiocy that endangered everyone.
忽视安全协议的决定是纯粹的愚蠢，危及了每个人。
C2 adjective /kənˈvɜːrsənt/

conversant

熟悉，精通
Meaning
familiar with or knowledgeable about something
Example
She is conversant with the latest developments in technology.
她熟悉最新的技术发展。
C2 noun /ˈɛmɪsɛri/

emissary

特使
Meaning
A person sent on a special mission, usually as a diplomatic representative.
Example
The king sent an emissary to negotiate peace.
国王派遣了一名特使去谈判和平。
C2 noun /sfɪˈrɒmɪtər/

spherometer

球形仪
Meaning
An instrument used for measuring the curvature of spherical surfaces.
Example
The scientist used a spherometer to measure the lens curvature.
科学家使用了一个球形仪来测量透镜的曲率。
C2 adjective /ˈhɔːri/

hoary

灰色的, 古老的
Meaning
gray or white with age; very old and respected
Example
The hoary oak tree stood as a witness to centuries of history.
那棵古老的橡树作为世纪历史的见证者伫立。
C2 noun /ɪˈrʌp.ʃən/

Irruption

突然的暴力入侵; 入侵或突袭; 突如其来的爆发或喷发
Meaning
a sudden violent entry; an invasion or raid; a sudden outburst or eruption
Example
The army's irruption into enemy territory caught the opposing forces completely off guard.
军队的突然闯入敌方领土使对方力量完全措手不及。