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A1 pronoun /ɪt/

it

它
Meaning
used to refer to a thing, animal, or idea previously mentioned or easily identified
Example
It is raining outside.
外面在下雨。
C1 adjective ɪnˈdel.ə.bəl

indelible

不可磨灭的
Meaning
Making marks that cannot be removed; impossible to forget or remove.
Example
Her speech left an indelible mark on the audience.
她的演讲给观众留下了不可磨灭的印象。
A1 noun /ˈɪntənet/

internet

全球计算机网络
Meaning
A global computer network providing a variety of information and communication facilities.
Example
The internet has revolutionized the way we access information.
互联网彻底改变了我们获取信息的方式。
C1 adjective /aɪˈdɪlɪk/

idyllic

田园诗般的美丽
Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
他们享受了一个田园诗般的海边假期。
B2 adjective ˈɪn.tɪ.ɡrəl

integral

必要的
Meaning
Necessary to make a complete whole; essential or fundamental.
Example
Exercise is an integral part of a healthy lifestyle.
锻炼是健康生活方式的重要组成部分。
C2 noun /ˈɪndɪkənt/

indicant

指示物
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
高烧通常是感染的指示物。
B1 noun /ˈɪnstrəmənt/

instrument

仪器
Meaning
A tool or device used for a particular purpose, especially for scientific or musical work.
Example
The doctor used a special instrument during the surgery.
医生在手术过程中使用了一种特殊的仪器。
C2 verb /ˌɪnkəˈpæsɪteɪt/

incapacitate

使无法运作
Meaning
to deprive someone or something of the ability or strength to function
Example
The severe injury incapacitated the player for the rest of the season.
重伤使球员在赛季剩余的时间内无法参赛。
A2 verb /ɪmˈpruːv/

improve

改善
Meaning
to make or become better; to enhance quality or condition
Example
Practice helps improve your skills.
练习帮助提高你的技能。
B2 noun /ˈɪn.flu.ən.sər/

Influencer

网红, 社交媒体影响者
Meaning
A person with the ability to influence potential buyers of a product or service by promoting or recommending the items on social media.
Example
Social media influencers shape consumer preferences.
社交媒体上的网红塑造了消费者的偏好。
C1 noun /aɪl/

isle

小岛
Meaning
A small island or peninsula, often poetic or literary.
Example
They spent their honeymoon on a beautiful tropical isle.
他们在一个美丽的热带小岛上度过了他们的蜜月。
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？
B2 verb /ɪmˈplaɪ/

imply

暗示
Meaning
To suggest something without directly stating it.
Example
Her tone seemed to imply that she was upset.
她的语气似乎暗示她很不高兴。
C2 noun /ˌɪnsəˈrɛkʃən/

insurrection

起义
Meaning
A violent uprising against an authority or government.
Example
The army was called in to suppress the insurrection.
军队被召来镇压起义。
C2 adjective /ɪnˈɡlɔːriəs/

inglorious

可耻的
Meaning
Causing shame or disgrace; not bringing honor or glory.
Example
The army suffered an inglorious defeat.
军队遭遇了可耻的失败。
B1 noun /ˈɪnkʌm/

income

收入
Meaning
money received for work or through investments
Example
His monthly income is enough to support his family.
他的月收入足以养家糊口。
C2 adjective /ˌɪməˈmɔːriəl/

immemorial

古老的
Meaning
Extending back beyond memory or record; ancient.
Example
The tradition has been followed since time immemorial.
这个传统自古以来就被遵循。
C1 verb /ˌɪntəˈsɛkt/

intersect

交叉
Meaning
to cross or pass through each other
Example
The two roads intersect at the city center.
这两条道路在市中心交汇。
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。
B2 noun /ˌɪmɪˈɡreɪʃən/

immigration

移民
Meaning
the action of coming to live permanently in a foreign country
Example
Immigration policies vary from country to country.
移民政策因国家而异。
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。
C1 adjective /ɪmˈprɒbəbl/

improbable

不太可能的
Meaning
Not likely to be true or to happen.
Example
It seems improbable that he will arrive on time.
看起来他准时到达的可能性很小。
C2 adjective /ˌɪnsəˈprɛsəbl/

insuppressible

不可抑制的
Meaning
That cannot be suppressed or restrained.
Example
She had an insuppressible urge to laugh during the ceremony.
她在仪式上有一种不可抑制的笑意。
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.
C1 noun /ˌɪnkəmˌpætəˈbɪlɪti/

incompatibility

不兼容性
Meaning
the state of being unable to exist or work together harmoniously; lack of compatibility
Example
The project failed because of incompatibility between the two software systems.
由于两个软件系统之间的不兼容性，项目失败了。
C1 noun /ˌɪnkjʊˈbeɪʃən/

incubation

将蛋、细胞或生物置于适宜的环境条件中以促进其发展的过程
Meaning
the process of keeping eggs, cells, or organisms in the right conditions for development
Example
The incubation of the eggs lasted for three weeks.
蛋的孵化持续了三周。
C1 noun /ɪnˈdɪf.ər.əns/

Indifference

冷漠; 漠视; 冷淡
Meaning
lack of interest, concern, or sympathy; the state of not caring about something
Example
His indifference to his studies resulted in poor grades throughout the semester.
他对学业的冷漠导致了整个学期的成绩很差。
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 adjective /ˌɪntərˈniːsaɪn/

internecine

内部冲突
Meaning
Relating to conflict within a group, often causing mutual destruction.
Example
The internecine conflict weakened the organization from within.
内部冲突削弱了组织内部的力量
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。
C2 adjective /ɪnˈkoʊ.ɪt/ or /ɪnˈkoʊ.eɪt/

inchoate

未完成的
Meaning
Just begun and not fully formed; rudimentary.
Example
His inchoate ideas needed more research to be developed.
他的未完成的想法需要更多的研究才能发展。
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 noun /ɪnˈsaɪtmənt/

incitement

煽动
Meaning
the action of provoking unlawful or violent behavior
Example
He was arrested for incitement to riot.
他因煽动暴乱被逮捕。
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

本能的, 自然的, 自动的
Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
他的本能反应救了他的生命。
C2 adjective /ɪɡˈnoʊ.bəl/

Ignoble

卑鄙; 可耻; 不光彩
Meaning
dishonorable; not noble in character; base or mean
Example
His ignoble actions betrayed his friends' trust.
他卑鄙的行为背叛了朋友的信任。
C1 noun /aɪˈtɪnərɛri/

itinerary

行程安排
Meaning
A planned route or schedule of a journey or trip.
Example
The travel agent gave us a detailed itinerary for our vacation.
旅行社为我们的假期提供了详细的行程安排。
C1 noun /ˌɪnækˈtɪvɪti/

inactivity

不活动
Meaning
the state of not being active physically or mentally; lack of action
Example
Prolonged inactivity can negatively affect both physical and mental health.
长期不活动会对身体和心理健康产生负面影响。
B2 adjective /ɪnˈseɪn/

insane

疯狂
Meaning
mentally ill; extremely foolish or unreasonable
Example
The idea of jumping off the cliff seemed insane.
从悬崖上跳下的想法显得疯狂。
C1 adjective /ɪmˈpɜːrsənl/

impersonal

非个人化
Meaning
not influenced by, showing, or involving personal feelings; lacking human warmth or emotion
Example
The letter was written in a very impersonal style.
信件是以非常非个人化的风格写的。
C2 adjective /ˌɪnsəˈpɔːrtəbl̩/

insupportable

无法忍受的
Meaning
Too extreme or difficult to be endured.
Example
The heat was insupportable during the long journey.
长途旅行中，热度是无法忍受的。
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。
C1 adjective /ˌɪnsɪˈdɛntəl/

incidental

附带的
Meaning
happening as a minor part or in connection with something else
Example
Incidental expenses like snacks and tips were included in the bill.
像零食和小费这样的附带费用被包含在账单中。
C1 adjective /ˌɪnsərˈmaʊntəbl/

insurmountable

不可逾越
Meaning
Too great to be overcome.
Example
The explorers faced insurmountable odds in the desert.
探险者在沙漠中面对着无法逾越的困难。
B2 verb /ɪmˈpoʊz/

impose

强加
Meaning
to force someone to accept something; to establish or apply by authority
Example
The government imposed new taxes on luxury goods.
政府对奢侈品征收了新税。
B2 verb /ˈɪnəveɪt/

innovate

创新
Meaning
To introduce new methods, ideas, or products.
Example
The company must innovate to stay ahead of its competitors.
公司必须创新，以保持领先于竞争对手。
B1 verb ɪnˈspaɪər

inspire

激励
Meaning
To fill someone with the urge or ability to do or feel something, especially creative or noble.
Example
Artemis seeks to inspire future generations.
阿尔忒弥斯寻求激励未来的几代人。
A2 verb /ˌɪntrəˈduːs/

introduce

介绍
Meaning
to present someone; to bring in for the first time
Example
Let me introduce you to my friend.
让我介绍你给我的朋友。
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。
C2 noun /ˌɪntərˈsɛʃən/

intercession

代祷
Meaning
the act of intervening or pleading on behalf of another person
Example
The prisoner was released due to the intercession of influential leaders.
由于有影响力的领导人的代祷，囚犯被释放了。
C1 adjective /ɪnˈsɒlvənt/

insolvent

破产
Meaning
unable to pay debts owed
Example
The insolvent firm could not meet its financial obligations.
破产公司无法履行其财务义务。
C1 adjective /ɪˈmuː.və.bəl/

immovable

不可移动
Meaning
Not able to be moved; fixed in position.
Example
Immovable barriers prevent change.
不可移动的障碍阻止了改变。
B1 adjective /ɪnˈkrɛdəbl/

incredible

难以置信的
Meaning
so extraordinary that it is hard to believe; amazing
Example
The view from the mountain was incredible.
从山顶看到的景色难以置信。
C1 verb /ɪmˈpɒvərɪʃ/

impoverish

使贫穷
Meaning
To make someone poor or reduce the quality or richness of something.
Example
The long war impoverished the entire nation.
漫长的战争使整个国家贫困。
C2 noun /ˈɪl.i.æd/

iliad

伊利亚特
Meaning
An ancient Greek epic poem attributed to Homer, describing the events of the Trojan War.
Example
Students studied the Iliad to understand Greek mythology and heroism.
学生们学习了《伊利亚特》，以理解希腊神话和英雄主义。
C1 noun /ɪnˈsæn.ə.ti/

Insanity

疯狂; 精神错乱
Meaning
the state of being seriously mentally ill; extreme foolishness or irrationality
Example
The defense lawyer argued that his client was not guilty by reason of insanity.
辩护律师辩称，他的客户因精神错乱而不应被判有罪。
C2 noun /ˌɪkθiˈɒlədʒɪst/

ichthyologist

鱼类学家
Meaning
A scientist who studies fish.
Example
The ichthyologist discovered a new species of fish in the river.
鱼类学家在河里发现了一种新的鱼类。
C1 adjective /ɪˈnænɪmət/

inanimate

无生命的物体
Meaning
not alive, especially not in the manner of animals and humans; lifeless
Example
The museum was full of inanimate objects from ancient times.
博物馆里充满了来自古代的无生命物体。
C2 adjective /ɪnˈtɛmpərət/

intemperate

失控的
Meaning
Lacking self-control; immoderate, especially in indulgence.
Example
The politician's intemperate remarks caused controversy.
政治家的失控言论引发了争议。
C2 adjective /ɪˈrɛfrəɡəbəl/

irrefragable

不可辩驳
Meaning
Impossible to refute, deny, or break
Example
The lawyer presented irrefragable evidence that proved his client’s innocence.
律师提供了不可辩驳的证据，证明了他客户的无辜。
B2 adjective ˌɪnstrəˈmɛntl

instrumental

重要的
Meaning
Serving as a crucial means, agent, or tool; having a part in bringing about a result.
Example
Children can be instrumental in building a better society.
孩子们可以在建设更好的社会中发挥重要作用。
C1 adverb, adjective /ˌɪnkɑːɡˈniːtoʊ/

incognito

匿名
Meaning
In disguise or with one's identity concealed.
Example
The celebrity traveled incognito to avoid the paparazzi.
名人为了避免狗仔队，匿名旅行。
C1 noun /ɪnˈsɜːrdʒənt/

insurgent

起义者
Meaning
A person who rises in revolt against authority or government.
Example
The army arrested several insurgents after the attack.
军队在袭击后逮捕了几名起义者。
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 ˈɪm.pɪ.təs

impetus

推动力
Meaning
The force or motivation that drives something forward; momentum.
Example
The new policy provided an impetus for economic growth.
新政策为经济增长提供了推动力。
C2 adjective /ɪnˈskruːtəbl̩/

inscrutable

幸福
Meaning
impossible to understand or interpret
Example
His inscrutable expression made it hard to know what he was thinking.
她收到奖项时无法掩饰自己的幸福。
C2 adjective /ˌɪnɪkˈstrɪkəbl/

inextricable

无法分开
Meaning
Impossible to separate or escape from.
Example
The two friends shared an inextricable bond.
这两个朋友共享了一个无法分开的联系。
C1 noun ˌɪndɪˈspensəbl̩ ˈkɒmpɪtənsi

indispensable competency

不可或缺的能力
Meaning
Essential skill or ability that cannot be done without; a crucial capability that is absolutely necessary.
Example
Digital literacy is an indispensable competency in the 21st century.
数字素养是21世纪不可或缺的能力。
B2 verb /ɪnˈstrʌkt/

instruct

指示
Meaning
to teach; to give directions
Example
The teacher instructed the students carefully.
老师仔细地指示了学生。
C1 verb /ɪnˈvɜːrt/

invert

翻转
Meaning
To turn something upside down or in the opposite position, order, or direction.
Example
He inverted the glass to let the water drain out.
他翻转了玻璃杯，让水流出来。
C1 verb /ɪmˈploʊd/

implode

内爆
Meaning
To collapse or burst inward violently.
Example
The old building imploded during the demolition.
老建筑在拆除时发生了内爆。
C2 noun /ɪnˈvɛstɪtʃər/

investiture

授职仪式
Meaning
the formal ceremony of conferring authority, rank, or office
Example
The king held an investiture ceremony for the new knight.
国王为新骑士举行了授职仪式。
A2 adverb /ɪnˈstɛd/

instead

代替
Meaning
As an alternative or substitute.
Example
She didn’t buy the dress; instead, she chose a pair of shoes.
她没有买那件裙子; 反而她选择了一双鞋子。
B2 adjective /ɪmˈper.ə.tɪv/

imperative

命令式
Meaning
Of vital importance; crucial; giving or expressing a command.
Example
It is imperative to address the climate crisis immediately.
必须立即解决气候危机。
B2 verb /ɪnˈdʌldʒ/

indulge

纵容
Meaning
to allow oneself to enjoy something enjoyable, often excessively
Example
He indulged in a piece of chocolate cake after dinner.
他在晚餐后沉浸在一块巧克力蛋糕中。
C1 noun /ɪnˈvɜːrʒən/

inversion

倒置
Meaning
A reversal of the normal order, position, or relationship.
Example
In poetry, inversion is often used to create emphasis.
在诗歌中，倒置常用来创造强调。
C1 verb /ɪnˈhɪbɪt/

inhibit

抑制
Meaning
to prevent or restrain someone or something from acting freely; to hinder
Example
Fear can inhibit personal growth.
恐惧可能会抑制个人成长。
C2 adjective /aɪˈsɒ.krə.nəs/

isochronous

等时间间隔发生
Meaning
Occurring at equal time intervals; in unison or synchrony.
Example
The pendulum swings are isochronous, repeating at equal intervals.
摆锤的摆动是等时性的，在相等的时间间隔重复。
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。
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。
C1 verb /ɪmˈpɪndʒ/

impinge

影响
Meaning
to have an effect or impact on something; to encroach or infringe
Example
The noise from the construction site impinges on our daily activities.
建筑工地的噪音对我们的日常活动产生影响。
C1 noun /ˈaɪsətəʊp/

isotope

同位素
Meaning
Atoms of the same element with equal number of protons but different numbers of neutrons.
Example
Carbon-14 is a radioactive isotope used in dating fossils.
碳-14 是一种放射性同位素，用于化石的年代测定。
C2 verb /ɪmˈpjuːt/

impute

归因于
Meaning
to attribute a fault or responsibility to someone
Example
They imputed the company's success to good leadership.
他们将公司的成功归功于出色的领导力。
B2 noun /ɪnˈdʒɛkʃən/

injection

Meaning
the act of introducing a substance into the body through a needle
Example
The nurse gave me an injection to prevent the infection.
C2 verb /ˈɪŋkʌlpeɪt/

inculpate

指责
Meaning
To blame or accuse someone of wrongdoing.
Example
The evidence seemed to inculpate the suspect in the crime.
证据似乎将嫌疑犯牵连到这起犯罪中。
B2 noun ɪnˈtɛɡrɪti

integrity

完整性
Meaning
The quality of being honest and having strong moral principles; moral uprightness.
Example
Teachers' integrity fosters a positive learning environment.
教师的完整性促进了积极的学习环境。
B1 noun ˌɪn.stɪˈtjuː.ʃən

institution

机构
Meaning
An organization founded and united for a specific purpose; an established law, practice, or custom.
Example
Institutions play a crucial role in governance.
机构在治理中起着至关重要的作用。
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。
C1 adjective /ˌɪnkənˈsɪdərət/

inconsiderate

不体贴
Meaning
Thoughtless; showing a lack of concern for others.
Example
It was inconsiderate of him to play loud music late at night.
他在深夜播放大声音乐，显得很不体贴。
C2 noun /ˌɪməʊˈbɪləti/

immobility

不动
Meaning
The state of being unable to move.
Example
After the accident, she suffered from immobility in her legs.
事故发生后，她的腿部出现了不动的症状。
C2 adjective /ɪnˈsɛndiˌɛri/

incendiary

煽动性的 / 挑衅的
Meaning
designed to cause fires or stir up conflict
Example
The politician’s incendiary remarks angered the crowd.
政治家的挑衅性言论激怒了人群。
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。
B2 noun /ɪnˈvɛstɪˌɡeɪtər/

investigator

幸福
Meaning
a person who carries out a formal inquiry or investigation
Example
The investigator gathered evidence from the crime scene.
当她获得奖项时，她无法掩饰自己的幸福。
C1 adjective /ˌɪndɪˈskrɪmɪnət/

indiscriminate

不加区分的
Meaning
Done without careful judgment; random or haphazard.
Example
The indiscriminate use of pesticides harms the environment.
滥用杀虫剂对环境造成了伤害。
C1 noun /ɪnˈsɜːrdʒəns/

insurgence

叛乱
Meaning
An act of rebellion or uprising against authority.
Example
The government struggled to contain the growing insurgence.
政府难以控制日益增长的叛乱。
C2 noun /ˌɪn.ɪˈbraɪ.ə.ti/

inebriety

醉酒
Meaning
the state of being drunk or intoxicated
Example
His frequent inebriety led to the loss of his job.
他的频繁醉酒导致了他失去工作。
C2 noun /ˌɪn.trəˈɡreʃ.ən/

introgression

基因引入
Meaning
The transfer of genetic information from one species to another through repeated backcrossing.
Example
Introgression plays a significant role in plant breeding.
基因引入在植物育种中起着重要作用。
C2 noun /ˈɪmpjʊdəns/

impudence

无礼
Meaning
Rude and disrespectful behavior.
Example
The student's impudence shocked the entire class.
学生的无礼行为让全班震惊。
C1 verb /ɪnˈfɛst/

infest

感染
Meaning
to overrun in large numbers, especially so as to cause damage or discomfort
Example
The old house was infested with rats.
老房子被老鼠感染。
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。
C2 noun /ˌɪnədˈvɜːrtəns/

inadvertence

疏忽
Meaning
Failure to pay attention; carelessness.
Example
The error happened through sheer inadvertence.
错误是由于完全的疏忽发生的。
C1 noun /ɪnˈdʒʌŋkʃən/

injunction

禁令
Meaning
A judicial order restraining a person from an action or compelling a certain act.
Example
The court issued an injunction to stop the company from polluting the river.
法院发布了一项禁令，阻止公司污染河流。
C1 adjective /ɪnˈsɛnsəbl/

insensible

昏迷
Meaning
Unconscious; unaware of or indifferent to something.
Example
He was insensible to the cold as he lay in the snow.
他在雪地里躺着时，对寒冷昏迷不觉。
B1 adjective /ɪnˈfɔːrməl/

Informal

非正式的; 放松的; 随意的
Meaning
relaxed and friendly; not official or ceremonial; casual
Example
The meeting was informal and relaxed.
会议是非正式的且轻松的。
C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
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 /ˈɜːrksəm/

irksome

恼人的
Meaning
annoying or irritating
Example
Waiting in a long line is one of the most irksome tasks.
在长队中等待是最让人恼火的任务之一。
C2 noun /ɪˈrɛvərəns/

irreverence

不敬
Meaning
a lack of respect for people or things that are generally taken seriously
Example
His jokes about religion showed irreverence to the sacred traditions.
他关于宗教的笑话表现了对神圣传统的不敬。
B2 adjective /ɪˈrɛləvənt/

Irrelevant

不相关的
Meaning
not connected with or relevant to something; having no bearing on the matter
Example
Your past mistakes are irrelevant to this discussion.
你过去的错误与这个讨论无关。
C2 noun /ɪˈmɒdəsti/

immodesty

不谦逊
Meaning
lack of modesty or decency; behavior or attitude that is overly bold or improper
Example
The article was criticized for its tone of immodesty.
这篇文章因其不谦逊的语气而受到批评。
C2 verb /ɪnˈdaɪt/

indite

创作
Meaning
To write or compose (literary or formal works).
Example
The poet indited a heartfelt sonnet.
诗人创作了一首真挚的十四行诗。
C1 adjective /ɪnˈkɒŋɡruəs/

incongruous

不一致
Meaning
Not fitting in with or suitable for the surroundings.
Example
His jokes were incongruous during the serious meeting.
他的笑话在严肃的会议中显得不一致。
C2 noun /ˈɪmɪˌteɪtər/

imitator

模仿者
Meaning
a person who copies the behavior, style, or actions of others
Example
He became famous as an imitator of popular singers.
他因模仿流行歌手而出名。
C1 noun /ˈɪnˌmeɪt/

inmate

囚犯
Meaning
a person confined to an institution such as a prison or hospital
Example
The prison has over a thousand inmates.
监狱里有超过一千名囚犯。
C1 noun /ɪmˈpjʊərəti/

impurity

杂质
Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
科学家去除了水样中的所有杂质。
C1 adjective /ˌɪrɪˈspɛktɪv/

Irrespective

无论如何; 不考虑
Meaning
without taking something into account; regardless of
Example
All students will be treated equally, irrespective of their background.
所有学生都会平等对待，无论他们的背景如何。
B2 noun /ˈɪnˌsaɪt/

insight

洞察力
Meaning
The ability to understand the true nature of something; deep understanding.
Example
Her insight into human behavior made her a successful psychologist.
她对人类行为的洞察力使她成为一位成功的心理学家。
C2 noun /ɪmˈpjuːnɪti/

impunity

Meaning
freedom from punishment or harmful consequences for an action
Example
The dictator ruled with impunity, ignoring international laws.
A2 adjective /ɪl/

Ill

生病的; 不舒服的; 健康状况差
Meaning
sick; unwell; in poor health
Example
He felt ill and decided to stay home from work.
他感到生病，决定从工作中呆在家里。
B1 adjective /ɪnkəˈrɛkt/

incorrect

不正确
Meaning
not correct or accurate
Example
The information you provided was incorrect.
您提供的信息是错误的。
C1 noun /ɪnˈfɜːrnoʊ/

inferno

火灾
Meaning
a large, intense fire that is dangerously out of control
Example
The building turned into an inferno within minutes.
这座建筑在几分钟内变成了火灾。
B2 adjective ɪnˈdɪdʒɪnəs

indigenous

本土的
Meaning
Originating or occurring naturally in a particular place; native.
Example
Indigenous plants are well adapted to the local environment.
本土植物很好地适应了当地环境。