Imagination
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B1 noun /ɪˌmædʒ.ɪˈneɪ.ʃən/

Imagination

想象; 创造性思维
Meaning
the faculty or action of forming new ideas or images not present to the senses; creative thinking
Example
Children's imagination allows them to turn a cardboard box into a spaceship or castle.
孩子们的想象力让他们能把一个纸箱变成太空船或城堡。
C2 noun /ˈɪn.fɪ.del/

Infidel

异教徒
Meaning
a person who does not believe in religion or whose religious beliefs differ from one's own
Example
In historical contexts, crusaders often referred to their enemies as infidels.
在历史背景中，十字军常常把他们的敌人称为异教徒。
C1 adjective /ɪnˈtɛlɪdʒəbl/

intelligible

Meaning
Able to be understood; clear enough to be comprehended.
Example
Her speech was barely intelligible over the noise.
B2 adjective /ɪnˈfekʃəs/

infectious

传染性的; 有感染力的
Meaning
capable of causing infection or disease; spreading easily from one person to another; able to spread feelings or attitudes such as enthusiasm
Example
Her infectious laughter made everyone in the room smile.
她富有感染力的笑声让大家都笑了。
B2 noun ɪnˈsɛntɪvz

incentives

激励
Meaning
Things that motivate or encourage one to do something.
Example
Tax incentives are used to encourage investment in renewable energy.
税收激励用于鼓励对可再生能源的投资。
C2 adjective /ˌɪrɪˈtriːvəbl/

irretrievable

不可恢复
Meaning
impossible to recover or regain
Example
The documents were lost in an irretrievable way after the fire.
文件在火灾后以不可恢复的方式丢失。
C1 noun /ˌɪnɪkˈspɪəriəns/

inexperience

缺乏经验
Meaning
Lack of knowledge or skill in a particular activity or field.
Example
His inexperience in handling negotiations was evident.
他在谈判中的缺乏经验显而易见。
C2 noun /ɪnˈɡrætɪˌtjuːd/

ingratitude

忘恩负义
Meaning
Lack of gratitude; failure to show thanks or appreciation.
Example
His ingratitude hurt her feelings after all she had done for him.
他的忘恩负义伤害了她的感情，尽管她为他做了这么多。
B2 adjective /ˌɪnsɪɡˈnɪfɪkənt/

insignificant

微不足道
Meaning
Too small or unimportant to be worth considering.
Example
The cost was so insignificant that nobody noticed it.
费用微不足道，以至于没有人注意到。
B2 noun ˌɪr.ɪˈɡeɪ.ʃən

irrigation

灌溉
Meaning
The artificial application of water to land or soil.
Example
Irrigation systems improve crop yields in dry regions.
灌溉系统提高了干旱地区作物的产量。
A2 adverb /ɪˈmiːdiətli/

immediately

立即
Meaning
at once; without delay
Example
She responded immediately to the emergency call.
她立即响应了紧急电话。
C2 adjective /ˌaɪ.kə.nəˈklæs.tɪk/

iconoclastic

特指攻击或拒绝已建立的信仰、传统或价值观
Meaning
Characterized by attacking or rejecting cherished beliefs, traditions, or established values.
Example
Her iconoclastic views challenged the conventional wisdom of the industry.
她的偶像破坏主义观点挑战了行业的传统智慧。
B1 adjective /ˈɪrɪteɪtɪŋ/

irritating

烦人的
Meaning
causing annoyance, impatience, or mild anger
Example
The constant noise from the street is extremely irritating.
街道上传来的持续噪音非常烦人。
C2 adjective /ˈɪm.pi.əs/

Impious

不敬的; 亵渎神明
Meaning
irreligious; lacking reverence for religion; blasphemous
Example
The impious act shocked the religious community.
不敬的行为震惊了宗教社区。
B2 noun /ˌaɪ.səˈleɪ.ʃən/

Isolation

隔离
Meaning
the process or fact of isolating or being isolated; separation from other people or things
Example
The patient was kept in isolation to prevent the spread of the infectious disease.
病人被隔离，以防止传染病的传播。
C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

Meaning
Impossible to avoid or escape; inevitable.
Example
Death is an ineluctable part of human existence.
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

无法修复的
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
古老手稿的损坏是无法修复的。
C1 adjective /ɪnˈtændʒəbl/

intangible

无形的
Meaning
Unable to be touched or grasped; not having a physical presence.
Example
Trust is an intangible quality in relationships.
信任是关系中一种无形的品质。
C2 adjective /ɪˈræsɪbl/

irascible

易怒的
Meaning
Easily angered; quick-tempered.
Example
His irascible nature often got him into trouble.
他易怒的性格常常使他陷入麻烦。
B2 adjective /ˌɪntəˈpɜːsənl/

interpersonal

人际
Meaning
Relating to relationships or communication between people.
Example
He has excellent interpersonal skills and gets along well with others.
他拥有出色的人际交往技巧，并且能与他人和谐相处。
B2 noun /aɪˈdiː/

id

身份证件
Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
请在入口处出示你的身份证件。
C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

灌输
Meaning
To teach someone to fully accept a set of beliefs or ideas without question.
Example
The regime tried to indoctrinate the youth with propaganda.
该政权试图通过宣传对年轻人进行洗脑。
C1 adjective /ˌaɪdiəˈlɪstɪk/

Idealistic

理想主义的
Meaning
pursuing high principles or ideals; unrealistically optimistic
Example
She has an idealistic view of changing the world.
她对改变世界有着理想主义的看法。
C2 noun /ɪmˈpaɪ.ə.ti/

Impiety

亵渎
Meaning
lack of piety or reverence, especially for a god; disrespect or irreverence toward religious matters
Example
His impiety shocked the religious community when he mocked their sacred ceremonies.
他的不敬让宗教团体震惊，当他嘲笑他们的神圣仪式时。
B1 noun /ˈɪn.flu.əns/

Influence

影响; 权力
Meaning
the capacity to have an effect on the character, development, or behavior of someone or something
Example
The teacher's positive influence helped the student overcome his learning difficulties.
老师的积极影响帮助学生克服了学习困难。
C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

即兴
Meaning
Done without being planned, organized, or rehearsed; spontaneous.
Example
He gave an impromptu speech at the event.
他在活动中做了即兴演讲。
C2 noun /ˌɪnəməˈrɑːtə/

inamorata

Meaning
A woman with whom someone is in love; a female lover.
Example
He wrote a poem dedicated to his inamorata.
A2 noun /ˈaɪtəm/

item

项目
Meaning
A single thing, object, or unit, often part of a list or collection.
Example
Each item on the list must be checked carefully.
列表中的每个项目必须仔细检查。
C2 noun /ˈɪndələns/

indolence

懒惰
Meaning
Avoidance of activity or exertion; laziness.
Example
His indolence kept him from finishing the project on time.
他的懒惰使他无法按时完成项目。
C2 adjective /ɪˈnjʊərd/

inured

习惯于
Meaning
Accustomed to something, especially something unpleasant.
Example
After years of hardship, she was inured to suffering.
经过多年的困苦，她已经习惯于痛苦了。
B1 noun /ɪnˈvɛstər/

investor

投资者
Meaning
a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit
Example
The investor funded the startup with a large sum of money.
投资者用一大笔钱资助了这家初创公司。
B2 adjective /ˈɪmpæktfʊl/

impactful

有影响力的
Meaning
Having a major impact or effect; powerful and forceful.
Example
Her impactful speech moved the audience to take action.
她有影响力的演讲促使观众采取行动。
C2 adjective /ɪmˈpælpəbəl/

impalpable

难以触及的
Meaning
unable to be felt by touch; difficult to grasp or understand
Example
There was an impalpable sense of fear in the room.
房间里有一种难以触及的恐惧感。
C2 adjective /ˌɪnɪkˈspiːdiənt/

inexpedient

不合适
Meaning
Not advisable, suitable, or practical in the circumstances.
Example
It would be inexpedient to invest without proper research.
在没有适当研究的情况下进行投资是不合适的。
B2 noun /ɪnˈsen.tɪv/

Incentive

激励; 鼓励
Meaning
a thing that motivates or encourages someone to do something; a reward or penalty that influences behavior
Example
The company offered a cash incentive to employees who exceeded their sales targets.
公司向超额完成销售目标的员工提供了现金激励。
B2 noun /ˈɪdɪət/

idiot

白痴
Meaning
a person who acts in a way that is considered very stupid or foolish
Example
He acted like an idiot at the party last night.
他昨晚在派对上像个白痴一样表现。
C1 adjective /ˌɪnkənˈsiːvəbl̩/

inconceivable

难以想象
Meaning
Impossible to imagine or believe; beyond comprehension.
Example
It seemed inconceivable that she could finish the marathon after such little training.
在如此少的训练之后，她能够完成马拉松，这简直难以想象。
C1 adverb /ɪnˈdɛfɪnətli/

indefinitely

无限期
Meaning
for an unlimited or unspecified period of time
Example
The project has been postponed indefinitely.
该项目已无限期推迟。
C2 noun /ɪˌledʒ.əˈbɪl.ə.ti/

Illegibility

难以辨认
Meaning
the quality of being impossible or difficult to read; unclear writing or print
Example
The doctor's handwriting was famous for its illegibility among the pharmacy staff.
医生的字迹因其难以辨认而在药房工作人员中广为人知。
B2 noun ˈɪnəveɪtɪv tuːlz

innovative tools

创新工具
Meaning
Creative devices or advanced technologies that introduce new methods or approaches to accomplish tasks.
Example
Teachers use innovative tools to enhance classroom learning.
教师使用创新工具来提高课堂学习。
C1 adjective ˌɪdiəsɪnˈkrætɪk

idiosyncratic

独特且个性化
Meaning
Relating to idiosyncrasy; peculiar or individual.
Example
His idiosyncratic behavior set him apart from his colleagues.
他的独特行为使他与同事们区别开来。
C1 verb /ɪmˈpɛər/

impair

损害
Meaning
to weaken or damage something, especially a function or ability
Example
Smoking can impair your lung capacity.
吸烟可能会损害您的肺部容量。
B2 noun /ɪmˈpɒlɪtnəs/

impoliteness

不礼貌
Meaning
lack of good manners or courtesy; rude behavior
Example
His impoliteness towards the guests shocked everyone.
他对客人的不礼貌让所有人都感到震惊。
C2 noun /ˌɪmpəˈtjuːəsəti/

impetuosity

冲动性
Meaning
The quality of being rash or impulsive.
Example
His impetuosity often got him into trouble.
他的冲动性常常让他陷入麻烦。
C1 adjective /ɪnˈdʌldʒənt/

indulgent

宽容的
Meaning
Having a tendency to be overly generous or lenient with someone.
Example
The indulgent mother allowed her child to stay up late.
宽容的母亲让孩子晚点才睡。
C2 adjective /ˌɪmpəˈmɪsəbl/

impermissible

不允许的
Meaning
Not permitted or allowed.
Example
Such behavior is impermissible in the workplace.
这种行为在工作场所是不允许的。
C2 verb /ˌɪntərˈsiːd/

intercede

Meaning
to act or plead on behalf of someone in difficulty or trouble; to intervene between parties to help resolve a dispute
Example
She interceded with the teacher to give her brother another chance.
C1 adjective /ɪnˈtræk.tə.bəl/

intractable

无法控制
Meaning
Difficult or impossible to manage, control, or solve.
Example
The conflict has become an intractable problem.
冲突已经成为一个无法控制的问题。
C1 verb /ɪˈnɔːɡjʊreɪt/

inaugurate

Meaning
To formally begin or introduce something, especially with a ceremony.
Example
The mayor will inaugurate the new bridge tomorrow.
C2 adjective /ɪnˈkoʊətɪv/

inchoative

初步的
Meaning
relating to the beginning of something; in an initial stage
Example
The poet used inchoative expressions to depict the dawn of creation.
诗人使用了初步的表达方式来描绘创世之初。
A1 preposition /ˈɪntuː/

into

进去
Meaning
expressing movement or direction to the inside of something
Example
She walked into the room quietly.
她安静地走进了房间。
C2 verb /ɪˈniː.bri.eɪt/

inebriate

Meaning
to intoxicate; to make someone drunk
Example
The strong wine was enough to inebriate even the most experienced drinker.
C1 noun ɪnˈdɪdʒɪnəs trəˈdɪʃənz

Indigenous Traditions

原住民传统
Meaning
Cultural practices, beliefs, and customs that have been passed down through generations among native peoples.
Example
Indigenous traditions in the Chittagong Hill Tracts are unique.
吉大港山区的原住民传统独特。
C1 adjective /ɪmˈpæʃənd/

impassioned

充满激情的
Meaning
Filled with or showing great emotion.
Example
She gave an impassioned speech about human rights.
她发表了关于人权的充满激情的演讲。
C2 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

不燃烧
Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
这种材料是防火的，适合建筑使用。
C2 adjective /ˌɪnˌɑːpərˈtuːn/

inopportune

不合时宜的时刻
Meaning
Happening at a bad or inconvenient time.
Example
His call came at the most inopportune moment.
他的电话在最不合时宜的时刻打来。
C2 verb /ɪnˈtɜːrpəˌleɪt/

interpolate

插入
Meaning
To insert something, often words, into a text or conversation; to estimate values between known data points.
Example
The editor interpolated a missing paragraph into the manuscript.
编辑在手稿中插入了一个缺失的段落。
C1 adjective; noun /ɪˈmɔːrtl/

immortal

不朽的
Meaning
living forever; never dying; lasting forever in fame or memory
Example
Legends often describe heroes as immortal beings who never die.
传说中英雄是不朽的存在。
C1 adjective /ɪnˈdʌstriəs/

industrious

勤奋的
Meaning
Hardworking and diligent in one's duties.
Example
She is an industrious student who always completes her assignments on time.
她是一个勤奋的学生，总是按时完成她的作业。
B1 adverb /ɪˈnɪʃəli/

initially

一开始
Meaning
At the beginning; at first.
Example
Initially, he refused the offer but later accepted it.
一开始，他拒绝了这个提议，但后来接受了。
B2 adjective /ˌɪd.iˈɒt.ɪk/

Idiotic

愚蠢
Meaning
extremely stupid; foolish; senseless
Example
His idiotic behavior embarrassed everyone at the meeting.
他的愚蠢行为让会议上的所有人感到尴尬。
B2 noun /ɪnˈsɪstəns/

insistence

坚持
Meaning
the act of demanding something firmly or repeatedly
Example
At his insistence, we stayed longer.
在他的坚持下，我们待得更久。
C2 adjective /ɪmˈprɛɡnəbl̩/

impregnable

固若金汤
Meaning
Unable to be captured, broken into, or defeated.
Example
The fortress was considered impregnable by the enemy.
敌人认为这个堡垒固若金汤。
C2 verb ˈɪn.kʌl.keɪt

inculcate

灌输
Meaning
Instill an attitude, idea, or habit by persistent instruction; to teach and impress by frequent repetitions.
Example
Parents should inculcate good values in their children.
父母应该灌输良好的价值观给孩子们。
C1 adjective /ɪˈledʒ.ə.bəl/

illegible

难以辨认
Meaning
Not clear enough to be read; unreadable.
Example
The doctor’s handwriting was almost illegible.
医生的字迹几乎难以辨认。
C1 adjective /ɪnˈtjuː.ɪ.tɪv/

intuitive

直觉的
Meaning
Based on instinctive understanding rather than reasoning.
Example
The software has an intuitive design that makes it easy to use.
该软件具有直观的设计，使其易于使用。
C2 noun /ɪmˈpruː.dəns/

Imprudence

轻率; 粗心; 不小心
Meaning
the quality of being imprudent; lack of care for consequences; recklessness
Example
His financial imprudence led to bankruptcy within just two years.
他的财务不谨慎导致了两年内破产。
C1 noun /ɪmˈpɜː.mə.nəns/

impermanence

无常
Meaning
The state or fact of lasting for only a limited period of time.
Example
The philosophy of Buddhism emphasizes the impermanence of life.
佛教哲学强调生命的无常性。
C2 noun /aɪˈoʊtə/

iota

极小的数量
Meaning
An extremely small amount.
Example
He did not show an iota of fear.
他一点儿恐惧都没表现出来。
B2 adjective /ɪmˈpɜːrfɪkt/

imperfect

不完美
Meaning
Not perfect; having faults or flaws.
Example
The painting was beautiful despite being imperfect.
这幅画很美，尽管它不完美。
C2 adjective /ˌɪnɪˈsɛnʃəl/

inessential

非必要的
Meaning
not necessary or important; not essential
Example
The report removes all inessential details to stay focused.
报告删除了所有非必要的细节以保持重点。
C2 adjective ɪˈnɛfəbl

ineffable

难以形容
Meaning
Too great or extreme to be expressed or described in words.
Example
The beauty of the landscape was ineffable.
景色的美丽是难以形容的。
C2 verb /ɪˈnjʊər/

inure

习惯
Meaning
To become accustomed to something, especially something unpleasant.
Example
Soldiers quickly became inured to the harsh conditions.
士兵们迅速适应了严酷的条件。
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

恒温箱
Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
早产儿被放入恒温箱接受护理。
C1 adjective ˌɪn.krəˈmen.təl

incremental

增量
Meaning
Relating to or denoting an increase or addition, especially one of a series on a fixed scale; proceeding in small stages.
Example
Incremental changes ensure sustainability.
增量变化确保可持续性。
C2 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

Meaning
Not able to be turned aside or diverted.
Example
The judge's indivertible attention was on the case.
B2 noun /ɪnˈtɛnsəti/

intensity

强度
Meaning
The quality of being extreme, strong, or forceful in degree.
Example
The intensity of the storm frightened the villagers.
风暴的强度吓坏了村民。
C1 adjective /ɪmˈplɔːzəbl/

implausible

不可信
Meaning
Not seeming reasonable or probable; unlikely to be true.
Example
The story she told was so implausible that no one believed her.
她讲的故事太不可信，以至于没有人相信她。
C2 adjective /ˌɪnkɒntrəˈvɜːtəbl/

incontrovertible

不可否认
Meaning
impossible to deny or dispute; unquestionable
Example
The evidence was incontrovertible and proved his innocence.
证据是不可否认的，并证明了他的清白。
C1 noun /ˌɪrɪˌspɒnsəˈbɪləti/

irresponsibility

不负责任
Meaning
lack of responsibility or accountability; failure to act in a reliable or sensible way
Example
The accident was caused by his irresponsibility at work.
事故是由于他在工作中的不负责任造成的。
C1 verb /ɪnˈdʌkt/

induct

Meaning
to formally admit someone into a position, organization, or office
Example
She was inducted into the university's honor society.
B2 adjective /ɪˈmætʃʊr/

Immature

不成熟; 未完全发展; 幼稚
Meaning
not fully developed; lacking emotional or intellectual development; childish
Example
His immature behavior during the meeting disappointed everyone.
他在会议中的不成熟行为让大家都很失望。
C1 adjective /ˌɪn.səˈbɔːr.dɪ.nət/

insubordinate

不服从
Meaning
Defiant of authority; disobedient to orders.
Example
The insubordinate employee refused to follow the manager's instructions.
不服从的员工拒绝遵循经理的指示。
C1 noun /ˈɪnlɛt/

inlet

水道口
Meaning
A small arm of the sea, a lake, or a river; an opening or passage for entry.
Example
The boat entered a narrow inlet along the coast.
船只进入了沿海的一条狭窄的水道口。
B2 adjective /ɪnˈtɒlərənt/

intolerant

不宽容
Meaning
unwilling to accept or respect beliefs or behavior different from one's own
Example
He is intolerant of any opinion that differs from his own.
他不能容忍与自己意见不同的任何观点。
C1 noun (plural) /ˈɪndɪˌsiːz/

indices

指数
Meaning
plural form of index; statistical measures or reference points used for comparison
Example
Stock market indices fell sharply after the announcement.
公告后，股市指数急剧下跌。
C2 noun /ˈɪnˌɡreɪt/

ingrate

Meaning
An ungrateful person; someone who shows no appreciation.
Example
He worked hard for his friend, but the ingrate never thanked him.
C1 adjective /ɪnˈdefɪnət/

Indefinite

不确定的
Meaning
not clearly defined; uncertain; vague; unlimited in time
Example
The meeting has been postponed for an indefinite period.
会议被推迟到一个不确定的时期。
C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

无效
Meaning
Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.
Example
The manager’s ineffectual leadership caused the team to lose motivation.
经理无效的领导导致团队失去了动力。
B1 adjective /ɪˈmiːdiət/

immediate

即时
Meaning
happening or done without delay
Example
The doctor gave her immediate attention.
医生给了她即时的关注。
C2 adjective /ˈɪndələnt/

indolent

懒惰
Meaning
Wanting to avoid activity or exertion; lazy.
Example
The indolent cat slept in the sun all afternoon.
懒惰的猫整天躺在阳光下睡觉。
C2 noun /ˈænʒənuː/

ingenue

天真无邪的年轻女性
Meaning
an innocent, naïve young woman, especially as represented in literature or theater
Example
She played the role of the ingénue in the play with great charm.
她在剧中扮演了那个天真无邪的年轻女性，展现了极大的魅力。
B2 adverb /ɪnˈɛvɪtəbli/

inevitably

不可避免地
Meaning
in a way that cannot be avoided or prevented
Example
Inevitably, the team faced challenges during the project.
不可避免地，团队在项目过程中遇到了挑战。
B2 noun /ˈaɪkɒn/

icon

图标, 象征
Meaning
A person or thing regarded as a symbol of something, or a graphic symbol on a screen.
Example
The singer became a cultural icon.
这位歌手成为了文化图标。
C1 adjective, noun /ɪnˈdɪkətɪv/

indicative

指示性
Meaning
Serving as a sign or expression of something; in grammar, a mood used to make factual statements.
Example
His tone was indicative of his frustration.
他的语气表明了他的沮丧。
C1 adjective /ɪˈræʃənəl/

irrational

非理性
Meaning
not logical or reasonable; lacking clear thought
Example
His fear of the dark was completely irrational.
他对黑暗的恐惧完全是非理性的。
C2 noun /ˌɪnvəˈluːʃən/

involution

内卷
Meaning
a complicated or intricate form or state; in biology, the shrinking of an organ after its function has finished
Example
The story was full of involution, making it hard to follow.
这个故事充满了内卷，使得跟随它变得很难。
C2 noun /ˌɪn.təˈvɛn.ʃə.nɪ.zəm/

interventionism

干预主义
Meaning
Government policy of active involvement in economic affairs.
Example
The central bank's interventionism helped stabilize inflation.
中央银行的干预主义帮助稳定了通货膨胀。
C2 adjective /ˌɪnɔːˈspɪʃəs/

Inauspicious

不吉利
Meaning
unlucky; showing signs that future success is unlikely; unfavorable
Example
The dark clouds seemed inauspicious for the wedding.
黑云似乎对婚礼不吉利。
C1 adjective /ˈɪndɪɡoʊ bluː/

Indigo-blue

靛蓝
Meaning
a deep blue color with a purplish tinge
Example
The indigo-blue sky looked magnificent at twilight.
在暮光中，靛蓝色的天空看起来壮丽。
C1 verb /ɪnˈfjʊərieɪt/

infuriate

激怒
Meaning
To make someone extremely angry.
Example
His careless remarks infuriated the entire team.
他的不小心评论让整个团队生气。
C1 noun /ˈɪtʃ.i.nəs/

itchiness

痒
Meaning
The quality or condition of feeling an irritating sensation on the skin that causes a desire to scratch.
Example
Eye itchiness often leads to rubbing.
眼睛的痒感常常导致揉搓。
B1 adjective ˌɪn.dɪˈpen.dənt

independent

独立
Meaning
Not depending on another for livelihood or subsistence; free from outside control; not subject to another's authority.
Example
An independent institution ensures transparency in governance.
一个独立的机构确保政府的透明度。
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

不忠
Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
他们的婚姻因他的不忠而结束。
C2 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

深红色
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
夕阳下天空变成了深红色。
C1 noun /ɪnˈækjʊrəsi/

inaccuracy

不准确
Meaning
lack of accuracy or precision; an incorrect or wrong detail
Example
The report contained several factual inaccuracies.
这份报告包含了一些不准确之处。
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

缩进
Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
老师要求学生在他们的论文中使用正确的缩进。
B1 adjective /ɪˈnɪʃəl/

initial

初步的
Meaning
Existing or occurring at the beginning.
Example
Her initial reaction was one of surprise.
她的初步反应是惊讶。
C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

无法纠正的
Meaning
incapable of being corrected, improved, or reformed
Example
He is an incorrigible optimist who never loses hope.
他是一个无法纠正的乐观主义者，从不放弃希望。
B2 adverb /ɪmˈpɔːtəntli/

importantly

重要地
Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
重要地，报告突出了立即采取行动的必要性。
C1 adjective /ɪnˈsʌf.ər.ə.bəl/

insufferable

无法忍受
Meaning
Too extreme to bear; intolerable.
Example
The heat during the summer was insufferable.
夏天的炎热是无法忍受的。
B2 noun /ˈɪmɪɡrənt/

immigrant

移民
Meaning
a person who comes to live permanently in a foreign country
Example
The city has welcomed many new immigrants this year.
今年这座城市接纳了许多新的移民。
C2 noun /ˈɪsməs/ or /ˈɪsθməs/

isthmus

地峡
Meaning
A narrow strip of land connecting two larger land areas, often with water on either side.
Example
The Panama Canal cuts through the Isthmus of Panama.
巴拿马运河穿过巴拿马地峡。
A2 noun /ɪŋk/

Ink

墨水
Meaning
a colored fluid used for writing, drawing, or printing; a dark liquid ejected by cuttlefish
Example
The old fountain pen leaked ink all over his white shirt during the meeting.
老钢笔在会议期间把墨水洒在他的白衬衫上。
B1 verb /aɪˈdentɪfaɪ/

identify

识别
Meaning
to recognize; to establish who someone is
Example
Can you identify the suspect?
你能识别嫌疑人吗？
B1 verb /ɪnˈkriːst/

increased

增加的
Meaning
became greater in size, amount, or degree
Example
The company's revenue increased last year.
公司去年收入增加了。
C1 noun ɪmˈpɛə(r)mənt

impairment

损伤, 残疾
Meaning
The state of being damaged or weakened; a disability or handicap.
Example
Hearing impairment can be caused by long-term exposure to loud noise.
听力损失可能是由长时间暴露于大声噪音造成的。
C1 noun ˌɪn.ɪˈfɪʃ.ən.si

inefficiency

低效率
Meaning
The state or quality of not achieving maximum productivity; failure to make the best use of time or resources.
Example
Government inefficiency leads to slow project completion.
政府低效率导致项目完成缓慢。
C1 noun /ˌɪmɔːrˈtæləti/

immortality

不朽
Meaning
the state of living forever; eternal life or lasting fame beyond death
Example
Many ancient cultures believed that heroes could achieve immortality through great deeds.
许多古代文化相信英雄可以通过伟大的事迹获得不朽。
B2 adjective /ɪˈmædʒ.ɪ.nər.i/

Imaginary

想象的; 虚构的; 不现实的
Meaning
existing only in imagination; not real; fictional
Example
The child had an imaginary friend who she talked to every day.
那个孩子有一个想象的朋友，每天和他说话。
B2 noun /ɪˈluː.ʒən/

Illusion

幻觉
Meaning
a thing that is or is likely to be wrongly perceived or interpreted; a false idea or belief
Example
The magician created a spectacular illusion that made the elephant appear to vanish.
魔术师创造了一个壮观的幻觉，使得大象看起来像消失了一样。