integrity
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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。
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 noun /ɪnˌtɛl.ɪˈdʒɛntsi.ə/

intelligentsia

知识分子阶层
Meaning
The group of people engaged in intellectual and cultural pursuits in a society.
Example
The intelligentsia played a key role in shaping public opinion.
知识分子阶层在塑造公众舆论方面发挥了重要作用。
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。
C1 noun /ˌɪməˈrælɪti/

immorality

不道德
Meaning
the quality of being immoral; behavior that violates accepted moral standards
Example
The community condemned the immorality of the corrupt officials.
社会谴责了腐败官员的不道德行为。
C1 adjective /ˌaɪ.di.əˈlɒdʒ.ɪ.kəl/

ideological

意识形态的
Meaning
Relating to or based on a system of ideas or beliefs.
Example
The two parties are divided by deep ideological differences.
这两个党派由于深刻的意识形态分歧而分裂。
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。
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。
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 /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。
C1 noun /ɪˌluːmɪˈneɪʃən/

illumination

Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
C2 verb /ɪnˈdʒɛst/

ingest

摄取
Meaning
To take food, drink, or another substance into the body, usually by swallowing.
Example
The patient must ingest the medicine with water.
病人必须用水服用药物。
C2 adjective /ˌɪrɪˈdjuːsəbl/

irreducible

不可约的
Meaning
impossible to reduce or simplify further
Example
The fraction 3/7 is irreducible.
分数 3/7 是不可约的。
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。
B2 verb /ˈɪr.ɪ.teɪt/

irritate

刺激
Meaning
To make someone annoyed or angry; to cause discomfort or inflammation.
Example
Rubbing your eyes can irritate them.
摩擦眼睛可能会刺激它们。
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。
C1 adjective /ˌɪnhɒˈspɪtəbl/

inhospitable

不适宜居住的
Meaning
Harsh and difficult to live in; unfriendly or unwelcoming to guests.
Example
The desert is an inhospitable environment for most plants.
沙漠是大多数植物无法生存的环境。
C1 adjective /ˌɪndɪˈvɪzəbl/

indivisible

Meaning
Not able to be divided or separated.
Example
The country's unity was indivisible despite differences.
C1 verb /ˌɪn.tɚˈtwaɪn/

intertwine

紧密连接或联系；一起扭曲或紧密结合
Meaning
To connect or link closely; to twist together or combine closely.
Example
Their lives became intertwined through years of friendship.
他们的生活通过多年的友谊紧密交织在一起。
B1 adjective /ɪmˈpruːvd/

improved

改进的
Meaning
made better or enhanced in quality or condition
Example
Her health has significantly improved since last month.
她的健康自上个月以来显著改善。
C1 adjective /ɪˈlɒdʒ.ɪ.kəl/

Illogical

不合逻辑的
Meaning
not reasonable or sensible; lacking logic
Example
It would be illogical to go swimming in such cold weather.
在这么冷的天气下游泳是不合逻辑的。
C1 noun /ˌɪn.trəˈspek.ʃən/

introspection

内省
Meaning
The examination or observation of one's own mental and emotional processes; self-reflection.
Example
Through introspection, she gained insight into her emotions.
通过内省，她对自己的情感有了更深刻的理解。
C2 noun /ɪmˈpjuːnɪti/

impunity

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

implacable

不可调和
Meaning
unable to be appeased, calmed, or pacified
Example
The soldiers faced an implacable enemy who refused to surrender.
士兵们面对着一个不可调和的敌人，他拒绝投降。
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。
C2 verb /ɪnˈhjuːm/

inhume

埋葬
Meaning
to bury a dead body in the ground
Example
They inhumed the warrior with full honors.
他们用全部荣誉埋葬了战士。
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。
C1 adjective /ˌɪndɪˈskriːt/

indiscreet

不谨慎
Meaning
Not careful in what one says or does, likely to reveal secrets or offend.
Example
It was indiscreet of him to mention the plan in public.
他在公众场合提到计划是不谨慎的。
C1 adjective /ˌɪn.dɪˈspen.sə.bəl/

indispensable

不可或缺
Meaning
Absolutely necessary, essential
Example
Water is indispensable for human survival.
水对人类生存至关重要。
A2 noun/verb /ˈaɪən/ or /ˈaɪərn/

iron

铁 / 熨斗
Meaning
a strong, hard metal used in construction; also to press clothes with heat
Example
He used an iron to smooth his shirt.
他用熨斗把衬衫弄平。
B2 verb /ˈaɪ.sə.leɪt/

isolate

孤立
Meaning
To separate something or someone from others.
Example
Doctors tried to isolate the patient to prevent the spread of infection.
医生试图将病人隔离，以防止感染传播。
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。
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。
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。
B2 verb /ɪnˈfɜːr/

infer

Meaning
to conclude or deduce something from evidence and reasoning rather than from explicit statements
Example
From his silence, I inferred that he was not happy with the decision.
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 /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。
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

无数; 无尽; 无限
Meaning
too many to be counted; countless; infinite in number
Example
There are innumerable stars in the night sky that we cannot see with our naked eyes.
夜空中有无数的星星，我们无法用肉眼看到。
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 adjective /ˌɪnkɒmprɪˈhɛnsəbl/

incomprehensible

难以理解的
Meaning
Impossible or very difficult to understand.
Example
The professor’s lecture was so fast it became incomprehensible.
教授的讲座太快了，以至于变得难以理解。
C1 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

不完整性
Meaning
the state of not being complete or whole; lack of necessary parts or fullness
Example
The incompleteness of the report caused delays in the project.
报告的不完整性导致了项目延误。
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 /ɪmˈprɑːvɪdəns/

improvidence

缺乏远见
Meaning
Lack of foresight or care for future needs.
Example
His improvidence led to financial difficulties.
他的缺乏远见导致了财务困难。
C1 verb /aɪˈdiː.ə.laɪz/

idealize

理想化
Meaning
To regard or represent something as perfect or better than it really is.
Example
Children often idealize their parents.
孩子们常常理想化他们的父母。
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。
C1 verb /ˈɪmplɪˌkeɪt/

implicate

牵涉
Meaning
To show someone’s involvement in a crime or wrongdoing.
Example
The evidence implicated several officials in the scandal.
证据揭示了几名官员在丑闻中的牵涉。
C1 noun /ɪˌreɡjəˈlærɪti/

irregularity

不规则性
Meaning
lack of regularity or consistency; a deviation from what is normal, expected, or orderly
Example
The audit revealed several financial irregularities in the company’s records.
审计发现该公司的记录中存在多项财务不规则性。
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。
B2 noun ˈɪn.frəˌstrʌk.tʃər

infrastructure

基础设施
Meaning
The basic physical and organizational structures and facilities needed for the operation of a society or enterprise.
Example
Digital infrastructure is vital for future advancements.
数字基础设施对未来的进步至关重要。
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 /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。
C1 verb /ɪnˈsaɪt/

incite

煽动
Meaning
to provoke; to stir up
Example
His speech incited the crowd to violence.
他的演讲激起了人群的暴力。
B2 adjective /ɪnˈtɛnsɪv/

intensive

强化
Meaning
Involving a lot of effort, energy, or concentration in a short period of time.
Example
She attended an intensive English course before moving abroad.
她在出国之前参加了一个强化的英语课程。
C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

必然性
Meaning
The quality of being certain to happen and impossible to avoid or prevent.
Example
The inevitability of change is a part of life.
变化的必然性是生活的一部分。
B1 verb /ɪnˈvɑːlv/

involve

涉及
Meaning
to include as a necessary part, or to engage someone in an activity
Example
The project will involve several departments working together.
这个项目将涉及多个部门共同合作。
A2 adjective/noun /ˈaɪrɪʃ/

irish

幸福
Meaning
relating to Ireland, its people, or its language
Example
The Irish countryside is very beautiful.
当她收到奖项时，她无法隐藏自己的幸福。
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 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。
C2 adjective /aɪˈtɪnərənt/

itinerant

流动的
Meaning
Traveling from place to place, especially for work or duty.
Example
The itinerant teacher moved from village to village to educate children.
这位流动的教师从一个村庄到另一个村庄，教育孩子们。
C2 verb ɪmˈbaɪb

imbibe

吸收, 同化, 喝
Meaning
Absorb or assimilate ideas or knowledge. To drink or take in.
Example
He tried to imbibe the wisdom from his mentor.
他试图从他的导师那里吸收智慧。
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。
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 noun /ˌɪnflɛksɪˈbɪlɪti/

inflexibility

缺乏灵活性
Meaning
the quality of being rigid or unwilling to change; lack of adaptability
Example
The inflexibility of the rules caused unnecessary delays.
规则的缺乏灵活性导致了不必要的延误。
C1 adjective /ɪnˈsteɪbəl/

instable

不稳定的
Meaning
not stable; liable to change, collapse, or fail; lacking firmness or reliability
Example
The instable political situation worried foreign investors.
不稳定的政治局势让外国投资者担心。
C2 adverb /ˌɪnəzˈmʌtʃ/

inasmuch

鉴于
Meaning
To the extent that; considering that.
Example
Inasmuch as you are their teacher, you should guide them carefully.
鉴于你是他们的老师，你应该小心地指导他们。
C2 adjective /ɪˈnɪmɪkəl/

inimical

敌对的 / 不利的
Meaning
tending to obstruct or harm; unfriendly or hostile
Example
The policy was inimical to the country's economic growth.
该政策对该国的经济增长不利。
B2 adverb /aɪˈrɒnɪkli/

ironically

具有讽刺意味地
Meaning
in a way that is contrary to what is expected or intended
Example
Ironically, the fire station burned down.
具有讽刺意味地，消防站着火了。
C2 adjective /ɪˈrɛzəluːt/

irresolute

优柔寡断
Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
他在十字路口犹豫不决，不知道走哪条路。
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。
C2 noun /ɪmˈpjuːɪsəns/

impuissance

无能, 无力
Meaning
inability to take effective action; helplessness
Example
The government’s impuissance in the face of crisis frustrated the people.
政府在危机面前的无能让人民感到沮丧。
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。
C1 adjective /ˌɪndɪˈspjuːtəbəl/

Indisputable

不可争辩的; 不容否认的; 确定的
Meaning
impossible to deny or argue against; undeniable; certain
Example
The evidence against him was indisputable.
反对他的证据是不可争辩的。
C1 adjective /ˌɪnˌkɒnsɪˈkwɛnʃəl/

inconsequential

微不足道
Meaning
Not important or significant; too small to matter.
Example
The mistake was minor and inconsequential.
这个错误是微不足道的。
C1 noun ɪnˈsɒl.vən.si

insolvency

破产
Meaning
The state of being unable to pay debts owed; bankruptcy.
Example
The company declared insolvency after years of losses.
公司在多年的亏损后宣布破产。
B2 adjective /ɪnˈtækt/

intact

完整
Meaning
Remaining whole, complete, and undamaged.
Example
Despite the storm, the old house remained intact.
尽管风暴，老房子依然保持完整。
B2 verb /ɪnˈdjuːs/

induce

引起
Meaning
to cause or persuade someone to do something; to bring about a result
Example
The doctor induced sleep with a mild sedative.
医生用轻度镇静剂引起了睡眠。
B2 noun /ɪnˈtɪəriər/

interior

内部
Meaning
the inside part of something; inner area of a place or object
Example
The interior of the hotel was beautifully decorated.
酒店的内部装饰非常美丽。
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。
C2 adjective /ɪmˈpɒndərəbl̩/

imponderable

无法估量
Meaning
Something difficult or impossible to estimate, assess, or understand
Example
The outcome of the election depends on many imponderable factors.
选举结果取决于许多无法估量的因素。
C2 adjective /ɪnˈdʒɛnjuəs/

ingenuous

天真
Meaning
Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.
Example
Her ingenuous smile revealed her genuine kindness.
她天真的笑容揭示了她真实的善良。
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 /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。
C1 noun /ˌɪnsɪɡˈnɪfɪkəns/

insignificance

微不足道
Meaning
The quality of being unimportant or trivial.
Example
He felt a sense of insignificance in the vast universe.
他在广阔的宇宙中感到微不足道。
C1 noun ɪnˌten.sɪ.fɪˈkeɪ.ʃən

intensification

强化
Meaning
The process of becoming or making something more intense or extreme.
Example
The intensification of climate change requires urgent action.
气候变化的强化需要紧急行动。
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。
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 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。
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。
B1 noun ˌɪndɪˈpendəns

independence

独立
Meaning
The fact or state of being independent; freedom from outside control; not being subject to another's authority.
Example
Independence inspired the movement.
独立激发了运动。
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
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。
B2 adjective /ˌɪnəˈproʊpriət/

inappropriate

不适当
Meaning
not suitable or proper in the circumstances
Example
It was inappropriate to talk loudly in the library.
在图书馆大声说话是不适当的。
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。
C1 adjective /ɪnˈkrɛdjələs/

incredulous

Meaning
unwilling or unable to believe something
Example
He gave her an incredulous look when she claimed she could fly.
C1 adjective /ˌɪnəˈtɛntɪv/

inattentive

不专心的
Meaning
not paying attention; lacking focus or concentration
Example
The inattentive student missed several important instructions.
那个不专心的学生错过了几条重要指示。
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 verb /ˈaɪdəlaɪz/

idolize

偶像崇拜
Meaning
To admire or worship someone excessively.
Example
Fans often idolize celebrities for their talent and lifestyle.
粉丝们常常因为他们的才华和生活方式而崇拜名人。
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 /ˌɪnkənˈsɪstənsi/

inconsistency

不一致
Meaning
The quality of being contradictory, irregular, or not staying the same.
Example
There is an inconsistency between his words and actions.
他的话语和行为之间存在不一致。
C2 adjective /ˈɪnfəntaɪl/

infantile

婴儿式
Meaning
characteristic of an infant; childish
Example
His infantile behavior embarrassed everyone at the meeting.
他那种婴儿式的行为让会议上的每个人都感到尴尬。
B2 noun /ɪnˈspɛktər/

inspector

检查员
Meaning
An official employed to ensure regulations are obeyed or standards are met.
Example
The inspector carefully checked the restaurant's kitchen for hygiene standards.
检查员仔细检查了餐厅的厨房是否符合卫生标准。
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。
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。
C1 verb /ɪnˈfjuːz/

infuse

Meaning
to fill or spread through something; to instill a quality, idea, or feeling
Example
The teacher tried to infuse her students with a love for reading.
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 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。
C2 noun (compound/erroneous entry) /ɪnˈɛksərəbl ɑːrmi/

inexorableinexorablearmy

无法阻挡的军队
Meaning
This appears to be a corrupted or concatenated form; interpreted as 'inexorable army' — an unstoppable or relentless force.
Example
The rebels feared the inexorable army approaching their stronghold.
叛军害怕即将接近他们堡垒的无法阻挡的军队。
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。
A1 noun /ˈaɪs kriːm/

Ice-cream

冰淇淋
Meaning
a frozen sweet dessert made from dairy products, usually served cold
Example
Children love to eat ice-cream on hot summer days.
孩子们喜欢在炎热的夏季日子里吃冰淇淋。
C1 verb /ˈɪtəreɪt/

iterate

迭代
Meaning
To repeat a process or statement, often to improve or refine.
Example
The software team will iterate the design until it meets user needs.
软件团队将反复迭代设计，直到满足用户需求。
C1 adjective /ɪnˈtrɛpɪd/

intrepid

无畏
Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
那个无畏的旅行者独自探险了丛林。
B2 adjective /ɪnˈfɪə.ri.ər/

inferior

低级的
Meaning
Of lower quality, rank, or status.
Example
This material is inferior to the one we used before.
这种材料比我们之前用的差。
C2 adjective /ɪnˈkɑːdʒɪtənt/

incogitant

缺乏思考
Meaning
Lacking thought; inconsiderate or thoughtless.
Example
It was incogitant of him to make such a rude comment.
他做出如此粗鲁的评论是缺乏思考的。
B1 adjective ɪnˈdʌs.tri.əl

industrial

工业的
Meaning
Relating to or characterized by industry.
Example
Industrial sectors boost exports.
工业部门促进出口。
C1 verb /ˈɪmprəvaɪz/

improvise

Meaning
To create or perform something spontaneously without preparation.
Example
The actor had to improvise his lines when he forgot the script.
C1 verb /ɪmˈbɛd/

imbed

嵌入
Meaning
To fix firmly or deeply in a surrounding mass.
Example
The journalist imbedded himself with the troops to report firsthand.
记者将自己嵌入部队中以第一时间进行报道。
C1 verb /ɪˈluːmɪneɪt/

illuminate

照亮
Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
路灯在夜晚照亮了道路。
C2 noun /ˈɪkθiəˌsɔːrz/

ichthyosaurs

鱼龙（已灭绝的海洋爬行动物）
Meaning
Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.
Example
Ichthyosaurs were swift predators of the ancient seas.
鱼龙是古代海洋的迅猛掠食者。
B2 adjective /ɪnˈkeɪpəbəl/

incapable

无能的
Meaning
lacking the ability, skill, or capacity to do something
Example
He is incapable of understanding complex instructions.
他无法理解复杂的指令。
C2 adjective /ɪˈnɪkwɪtəs/

iniquitous

不公正
Meaning
grossly unfair and morally wrong
Example
Slavery was one of the most iniquitous practices in history.
奴隶制是历史上最不公正的实践之一。