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。

B1 noun /ɪnˌvɛs.tɪˈɡeɪ.ʃən/

investigation

调查

Meaning

the process of inquiring into or examining something carefully to find the truth

Example

The investigation revealed new evidence about the fraud.

调查揭示了有关欺诈的新证据。

C1 adverb /ɪnˈvɜːrs.li/

Inversely

反向地; 相反地

Meaning

in a way that is opposite or contrary; in reverse order or manner

Example

The price of goods is inversely related to their availability in the market.

商品的价格与其在市场上的可得性成反比。

C1 noun /ˈɪrɪtənt/

irritant

刺激物

Meaning

something that causes irritation or discomfort

Example

Dust is a common irritant for people with allergies.

灰尘是过敏者常见的刺激物。

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 /ɪnˈses.ənt/

incessant

持续的

Meaning

Continuing without pause or interruption; constant.

Example

The incessant noise from the construction site made it hard to concentrate.

建筑工地上不断的噪音使得集中精力变得困难。

C2 noun /ˌɪnˌkeɪpəˈbɪləti/

incapability

无能力

Meaning

lack of ability or power to do something; inability or incompetence

Example

His incapability to manage the team led to serious problems.

他管理团队的无能力导致了严重的问题。

B2 adjective /ˈɪɡ.nər.ənt/

Ignorant

无知

Meaning

lacking knowledge or awareness; uninformed

Example

She was ignorant about the new technology trends.

她对新技术趋势一无所知。

C1 noun /ɪnˈsek.tɪ.saɪd/

Insecticide

杀虫剂

Meaning

a substance used for killing insects; a chemical pesticide that targets insects

Example

The farmer sprayed insecticide on his crops to protect them from harmful bugs.

农民在作物上喷洒杀虫剂，以保护它们免受有害昆虫的侵害。

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。

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。

B1 noun ɪmˈpruːv.mənts

improvements

改善

Meaning

The action of making or becoming better; an instance of something becoming or being made better.

Example

Continuous improvements increase productivity.

持续的改善提高了生产力。

C2 adjective /ɪˈlɪmɪtəbl/

illimitable

无限

Meaning

Without limits or bounds.

Example

The universe is often described as illimitable.

宇宙常被描述为无限的。

C2 noun /ˈɪn.dɪ.dʒəns/

indigence

贫困

Meaning

a state of extreme poverty or destitution

Example

The charity was founded to help people living in indigence.

这个慈善组织成立是为了帮助生活在贫困中的人们。

C1 adjective /ɪˈlɪsɪt/

illicit

非法的

Meaning

Forbidden by law, rules, or custom.

Example

The police shut down the illicit drug operation.

警方关闭了非法毒品交易。

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 adjective /ɪnˈveɪsɪv/

invasive

侵入性的

Meaning

Tending to spread harmfully, intruding aggressively, or encroaching beyond proper boundaries.

Example

The doctor explained that the procedure was minimally invasive.

医生解释说，该程序是最小的侵入性。

B2 noun ˈɪn.deks

index

索引

Meaning

An alphabetical list of names, subjects, etc. with references to the places where they occur, typically found at the end of a book; a sign or measure of something.

Example

An index organizes critical data.

索引组织重要数据。

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。

B2 adjective /ɪnˈstrʌkʃənəl/

instructional

教学的

Meaning

providing knowledge or information; intended to teach

Example

The website offers many instructional videos for beginners.

该网站提供许多教学视频，适合初学者。

C2 adjective /ɪnˈsuːpərəbl/

insuperable

不可逾越

Meaning

Impossible to overcome or surpass.

Example

The team faced insuperable challenges during the expedition.

团队在探险过程中面临了不可逾越的挑战。

B2 noun ɪˈlɪtərəsi

illiteracy

文盲

Meaning

The inability to read and write; lack of education or knowledge in a particular area.

Example

Illiteracy often leads to poverty and unemployment.

文盲常常导致贫困和失业。

A2 noun /ˌɪnvɪˈteɪʃən/

invitation

幸福

Meaning

a written or spoken request to attend an event or to participate in something

Example

She sent me an invitation to her wedding.

当她收到奖项时，她无法掩饰自己的幸福。

C1 noun ˌɪrɪˈvɜːrsəbl ˈdæmɪdʒ

irreversible damage

不可逆的损害

Meaning

Harm or injury that cannot be undone or repaired.

Example

Climate change causes irreversible damage to ecosystems.

气候变化对生态系统造成了不可逆的损害。

C1 noun /ˈɪn.fən.tri/

Infantry

步兵

Meaning

soldiers marching or fighting on foot; foot soldiers collectively

Example

The infantry advanced across the battlefield on foot.

步兵在战场上走路前进。

B1 noun aɪˈdɛntɪti

identity

身份

Meaning

The fact of being who or what a person or thing is; the characteristics determining who or what a person or thing is.

Example

The day reinforces our national identity.

这一天加强了我们的民族认同。

C1 noun /ˈɪn.tə.lekt/

intellect

智力

Meaning

The ability to think, reason, and understand objectively.

Example

Her intellect is admired by all her colleagues.

她的智力受到所有同事的赞赏。

C2 noun /ɪnˈtɛstəsi/

intestacy

无遗嘱的死亡

Meaning

The condition of dying without having made a valid will.

Example

His estate was divided according to the laws of intestacy.

他的财产根据无遗嘱的法律被分配。

C1 noun /ɪnˈhɛrɪtər/

inheritor

继承人

Meaning

a person who receives money, property, or a title when someone dies

Example

She became the inheritor of her family's estate.

她成为了家族财产的继承人。

C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

内在地

Meaning

In a way that is naturally or inherently part of something's essential nature.

Example

Some people are intrinsically motivated to learn.

有些人内在地受到学习的激励。

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 noun /ˌɪmprəˈpraɪəti/

impropriety

不当行为

Meaning

Failure to observe standards of honesty or modesty; improper behavior.

Example

The politician was accused of financial impropriety.

该政治家被指控涉及财务不当行为。

B2 adjective /aɪˈrɒnɪk/

ironic

讽刺的，讽刺性的

Meaning

happening in the opposite way to what is expected, often amusing or sarcastic

Example

It is ironic that the fire station burned down.

消防站着火了，真讽刺。

C2 adjective /ˌɪmpɪˈkjuːniəs/

impecunious

贫穷

Meaning

Having little or no money; poor.

Example

He grew up in an impecunious family.

他在一个贫穷的家庭中长大。

C2 adjective /ɪˈmɒdɪst/

immodest

傲慢 / 不得体

Meaning

lacking humility or decency; excessively proud or improper

Example

His immodest remarks offended the audience.

他的傲慢言辞冒犯了观众。

C1 noun /ɪmˈpɒs.tər/

Impostor

冒充者; 欺诈者

Meaning

a person who pretends to be someone else in order to deceive others; a fraud

Example

The impostor convinced everyone he was a doctor until his fake credentials were discovered.

冒充者说服了每个人，直到他的假证书被发现。

A2 verb /ɪnˈkluːd/

include

包括

Meaning

to have as part of a whole; to contain or comprise

Example

The price includes all taxes.

价格包含所有税费。

A2 noun /ˈɪm.ɪdʒ/

Image

图像; 形象; 表象

Meaning

a representation of the external form of a person or thing in art; a mental picture or impression

Example

The company worked hard to improve its public image after the scandal.

公司在丑闻后努力改善其公众形象。

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。

C1 adjective ɪnˈsaɪ.sɪv

incisive

尖锐

Meaning

Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.

Example

His incisive comments revealed the core issues.

他的尖锐评论揭示了核心问题。

C2 adjective /ˌɪnkəmˈprɛsəbl/

incompressible

不可压缩

Meaning

Not able to be pressed or squeezed into a smaller space.

Example

Liquids are generally considered incompressible.

液体通常被认为是不可压缩的。

B1 noun ɪnˈtel.ɪ.dʒəns

intelligence

智能

Meaning

The ability to learn, understand, and think in a logical way about things

Example

Intelligence is key in AI development.

智能是AI发展的关键。

C2 adjective /ˌɪɡ.nəˈmɪn.i.əs/

ignominious

可耻的

Meaning

Marked by shame, disgrace, or humiliation.

Example

The team suffered an ignominious defeat in the finals.

队伍在决赛中遭遇了可耻的失败。

C1 noun ˈɪn.fər.əns

inference

推论

Meaning

A conclusion reached on the basis of evidence and reasoning; logical deduction.

Example

Scientists make inferences based on experimental data.

科学家根据实验数据做出推论。

C2 noun /ɪnˈtɛnʃən/

intension

内涵

Meaning

The internal content of a concept; the set of attributes implied by a word or phrase.

Example

The intension of the word 'dog' includes being a mammal and domesticated.

'狗'这个词的内涵包括是哺乳动物和被驯养。

C1 noun /ˌɪnˈdɪsəplɪn/

indiscipline

缺乏纪律

Meaning

lack of discipline or self-control; failure to obey rules or maintain order

Example

Indiscipline among the students disrupted the learning environment.

学生的缺乏纪律破坏了学习环境。

C1 adjective /ˌɪndɪˈsaɪsɪv/

Indecisive

优柔寡断的

Meaning

unable to make decisions quickly; hesitant; wavering

Example

She was indecisive about which university to attend.

她对要去哪个大学犹豫不决。

C1 noun ˌɪnsjʊˈleɪʃən

insulation

绝缘

Meaning

Material used to prevent heat, sound, or electricity from being transmitted from one area to another.

Example

Insulation of food storage areas can prevent pests from entering.

食品储存区的绝缘可以防止害虫进入。

C1 verb /ɪnˈtɪmɪdeɪt/

intimidate

Meaning

To frighten or overawe someone, especially to make them do what one wants.

Example

The bully tried to intimidate the smaller kids.

C1 adjective /ɪˈnɜːrt/

inert

惰性

Meaning

lacking the ability or strength to move or act; chemically inactive

Example

The patient remained inert on the bed.

病人躺在床上保持不动。

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 verb /ɪnˈsɪst/

insist

坚持

Meaning

to demand firmly; to state persistently

Example

He insisted on paying the bill.

他坚持要付账单。

B2 adjective /ɪnˈædɪkwət/

inadequate

不充分

Meaning

Not sufficient or good enough.

Example

The funding was inadequate to complete the project.

资金不足以完成项目。

B2 adjective /ˌɪnstɪˈtjuːʃənl/

institutional

制度的

Meaning

Relating to an organization or established practice.

Example

The government made several institutional reforms in education.

政府在教育领域进行了一些制度改革。

B2 verb /ɪtʃ/

itch

瘙痒

Meaning

to feel an urge to scratch; to have a restless desire

Example

My skin itches from the mosquito bites.

我的皮肤因蚊子叮咬而发痒。

C1 adjective /ˌɪntərˈtʃeɪndʒəbl/

interchangeable

可互换的

Meaning

able to be exchanged with each other without difference or loss of function

Example

These machine parts are interchangeable, so they can be replaced easily.

这些机器部件是可互换的，所以它们可以轻松地被替换。

B1 adjective /ɪnˈtɜːrnəl/

internal

内部

Meaning

situated inside; relating to the inside or inner part of something

Example

The company is conducting an internal audit this month.

公司本月正在进行内部审计。

C2 adjective /ɪnˈɛksərəbl/

inexorable

不可阻挡

Meaning

Impossible to stop or prevent; relentless.

Example

The inexorable rise of technology is changing every aspect of life.

技术的不可阻挡的崛起正在改变生活的方方面面。

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 adjective /ɪnˈsɪpɪd/

insipid

乏味的

Meaning

lacking flavor, interest, or excitement; dull

Example

The soup was insipid and needed more seasoning.

汤无味，需要更多的调料。

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。

C1 noun /ɪnˈsɜːʃən/

insertion

插入

Meaning

the action of inserting something into something else

Example

The insertion of the new data was completed successfully.

新数据的插入已成功完成。

B2 noun /ˌɪntərˈsɛkʃən/

intersection

交叉口

Meaning

a point where two or more things intersect, especially a road or path

Example

The intersection of Main Street and 5th Avenue is always busy.

主街和第五大道的交叉口总是很忙。

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 /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 adjective /ˌɪnɔːrˈɡænɪk/

inorganic

无机的

Meaning

relating to substances that are not derived from living organisms; lacking organic structure or growth

Example

Inorganic compounds are commonly studied in chemistry labs.

无机化合物是化学的重要部分。

C2 verb /ɪnˈveɪɡəl/

inveigle

诱骗

Meaning

To persuade someone to do something by deception or flattery.

Example

She inveigled him into signing the contract.

她劝他签署了合同。

B2 noun /ˌɪnstəˈbɪləti/

instability

不稳定

Meaning

lack of stability or balance; tendency to change, fail, or collapse easily

Example

Political instability has slowed economic growth in the region.

政治不稳定减缓了该地区的经济增长。

C1 noun /ɪˈnɜː.ʃə/

Inertia

惯性；缺乏活动

Meaning

a tendency to do nothing or remain unchanged; lack of activity or movement

Example

The team's inertia prevented them from adapting to the rapidly changing market conditions.

团队的惯性阻止了他们适应迅速变化的市场条件。

C1 verb /ɪnˈvoʊk/

invoke

呼叫

Meaning

to call upon a higher power, authority, or principle for help, support, or justification

Example

The lawyer invoked the constitution to defend his client.

律师援引宪法来为他的客户辩护。

C1 adjective /ɪˈnɔːrdənət/

inordinate

过度的

Meaning

Excessive or unusually large in degree.

Example

She spent an inordinate amount of time on her phone.

她在手机上花费了过多的时间。

C2 adjective /ˌɪnsəˈluːbriəs/

insalubrious

不健康

Meaning

Unhealthy or not conducive to well-being.

Example

They moved out of the insalubrious neighborhood for the sake of their health.

他们为了健康搬出了不健康的社区

C1 verb ɪˈmɜːrs

immerse

沉浸

Meaning

To involve oneself deeply in a particular activity or interest; to surround completely.

Example

Immerse yourself in the new language.

沉浸在新的语言中。

C1 adjective /ɪnˈdetɪd/

Indebted

负债的; 感激的

Meaning

owing money or gratitude to someone; obligated; grateful

Example

I am deeply indebted to my teacher for all her guidance.

我对我的老师为我提供的所有指导深感感激。

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。

C2 adjective /ɪnˈvʌlnərəbl/

invulnerable

无敌

Meaning

Impossible to harm, damage, or defeat.

Example

The fortress was thought to be invulnerable to attack.

堡垒被认为无法受到攻击。

C2 adjective /ˈɪnˌbrɛd/

inbred

天生的

Meaning

existing naturally in a person or animal; also related to reproduction within a limited community

Example

He has an inbred sense of loyalty.

他有天生的忠诚感。

B2 adjective /aɪˈrɒnɪkəl/

ironical

讽刺的

Meaning

expressing irony; having the nature of irony

Example

Her ironical tone made everyone uncomfortable.

她的讽刺语气让每个人都感到不舒服。

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。

C2 noun /ˈaɪ.kɒn/

ikon

宗教图像或符号

Meaning

A religious image or symbol, especially in the Eastern Orthodox Church.

Example

The church displayed a beautifully painted ikon of the Virgin Mary.

教堂展示了美丽的圣母玛利亚圣像。

C1 noun /ˈɪn.tə.mə.si/

Intimacy

亲密; 亲近

Meaning

close familiarity or friendship; closeness; a private cozy atmosphere

Example

The couple valued the emotional intimacy they shared more than material possessions.

这对情侣比物质财富更珍视他们分享的情感亲密。

B1 verb /ɪnˈstɔːl/

install

安装

Meaning

To place or fix equipment or software so it is ready for use.

Example

He installed the new software on his computer.

他在他的电脑上安装了新软件。

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。

C1 verb /ɪnˈsɪnjueɪt/

insinuate

Meaning

To suggest or hint something indirectly and often unpleasantly.

Example

He insinuated that she had lied about her qualifications.

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 /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。

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。

C1 adjective ɪnˈtrɪn.zɪk

intrinsic

内在的, 本质的, 自然的

Meaning

Belonging naturally; essential. Existing as a natural or basic part of something.

Example

Creativity is an intrinsic quality of a great artist.

创造力是伟大艺术家的内在品质。

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。

B2 adjective /ɪˈlɪt.ər.ət/

Illiterate

文盲; 不识字的; 无知的

Meaning

unable to read or write; lacking education

Example

The program aims to help illiterate adults learn to read and write.

该计划旨在帮助文盲成年人学习读写。

C1 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

Meaning

Impossible to pass through or enter; impossible to understand.

Example

The dense forest was nearly impenetrable.

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。

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 /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。

B2 verb /ɪmˈprɪzən/

imprison

囚禁

Meaning

to put someone in prison; to confine or restrict someone's freedom

Example

The judge imprisoned the criminal for five years.

法官把罪犯囚禁了五年。

B2 adjective ˈɪn.tɪ.ɡreɪ.tɪd

integrated

集成

Meaning

Combining or coordinating separate elements so as to provide a harmonious, interrelated whole.

Example

Integrated systems optimize efficiency.

集成系统优化效率。

C1 noun /ɪnˈdɪɡ.nə.ti/

Indignity

耻辱

Meaning

treatment or circumstances that cause one to feel shame or loss of dignity; humiliation

Example

She refused to suffer the indignity of being searched without proper cause.

她拒绝忍受在没有正当理由的情况下被搜身所带来的耻辱。

C1 noun /ˌɪnkɑːrˈneɪʃən/

incarnation

化身

Meaning

the embodiment of a deity, spirit, or quality in a physical form

Example

The monk was considered the incarnation of compassion.

这位僧侣被认为是慈悲的化身。

C1 adjective /ˌɪnɑːrˈtɪkjʊlət/

inarticulate

含糊不清

Meaning

Unable to express oneself clearly or effectively in speech or writing.

Example

She became inarticulate with emotion during the speech.

她在演讲中因为情绪而变得含糊不清。

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。

B1 adjective /ɪnˈvɑːlvd/

involved

卷入的

Meaning

complicated or engaged in something

Example

She was deeply involved in community service.

她深深地卷入了社区服务。

C1 adjective /ɪnˈhjuːmən/

Inhuman

不人道的

Meaning

lacking human qualities; cruel; brutal; savage

Example

The dictator's inhuman treatment of prisoners shocked the international community.

独裁者对囚犯的非人道待遇震惊了国际社会。

C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

鱼类学

Meaning

The branch of zoology that deals with fish.

Example

He pursued a degree in ichthyology at the university.

他在大学获得了鱼类学学位。

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 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。

C1 noun /ˈɪnsɪdəns/

incidence

事件发生率

Meaning

the occurrence, rate, or frequency of something

Example

The incidence of road accidents has decreased this year.

今年道路事故的发生率有所下降。

C1 adjective /ˌɪnkənˈkluːsɪv/

inconclusive

不确定的

Meaning

Not leading to a definite result or decision.

Example

The investigation remained inconclusive due to a lack of evidence.

由于缺乏证据，调查仍然是没有结果的。

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。

C1 adjective /ɪnˈvæljʊəbl/

invaluable

无价

Meaning

Extremely useful or indispensable.

Example

Her advice proved invaluable to my success.

她的建议对我的成功起到了无可估量的作用。

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 adjective /ɪˈmɪsəbl/

immiscible

不相溶

Meaning

Describes liquids that do not mix together.

Example

Oil and water are immiscible liquids.

油和水是无法混合的液体。

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。

A1 noun /aɪs/

Ice

冰

Meaning

water that has frozen and become solid

Example

The ice in my drink melted quickly in the hot weather.

我饮料中的冰在热天气下很快融化了。

C1 verb /ɪmˈpɛl/

impel

Meaning

to drive, force, or urge someone to do something

Example

Her curiosity impelled her to open the mysterious box.

B1 adjective /ˌɪnɪkˈspɛnsɪv/

Inexpensive

便宜的; 经济实惠的; 负担得起的

Meaning

not costing a lot of money; affordable; budget-friendly

Example

This restaurant offers delicious and inexpensive meals for students.

这家餐厅为学生提供美味且便宜的餐点。

B2 noun /ɪnˌtɜːrprəˈteɪʃən/

interpretation

解释

Meaning

the action of explaining the meaning of something

Example

The teacher gave her own interpretation of the poem.

老师给出了她对这首诗的解释。

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。

B1 noun /ˈɪnpʊt/

input

输入，提供的信息

Meaning

information, advice, or data that is put into a system, device, or process

Example

The manager asked for everyone's input on the new project.

经理要求大家对新项目提供意见。

B1 adjective /ˌɪmpəˈlaɪt/

impolite

不礼貌

Meaning

Not showing good manners; rude.

Example

It is impolite to interrupt someone while they are speaking.

打断别人说话是不礼貌的。

C1 adjective /ɪˈmækjələt/

immaculate

完美无瑕

Meaning

perfectly clean, neat, or free from flaws

Example

Her room was immaculate, with everything in its place.

她的房间完美无瑕，一切都井井有条。

C1 adjective /ɪnˈdʒʊəriəs/

injurious

有害的

Meaning

Causing or likely to cause harm or damage.

Example

Smoking is injurious to health.

吸烟对健康有害。