inflection
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C1 noun ɪnˈflɛk.ʃən

inflection

语调变化
Meaning
The change in pitch or tone of voice when speaking for emphasis.
Example
His inflection kept the audience engaged.
他的语调让观众保持关注。
C1 adjective /ɪmˈpæsɪv/

impassive

冷漠
Meaning
Not showing or feeling emotion; expressionless.
Example
Despite the shocking news, she remained impassive.
尽管有令人震惊的消息，她依然无动于衷。
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 (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。
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 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。
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 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。
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。
C1 noun /ɪnˈdem.nə.ti/

Indemnity

赔偿
Meaning
security or protection against a loss or other financial burden; compensation for damage or loss
Example
The insurance company provided full indemnity for the damages caused by the flood.
保险公司为洪水造成的损失提供了完全的赔偿。
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 /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 /ɪˈmɔːrtəlaɪz/

immortalize

永生
Meaning
to preserve the memory of someone or something forever
Example
The statue was built to immortalize the hero’s sacrifice.
这座雕像是为了让英雄的牺牲永生化。
C1 adjective /ɪnˈfriːkwənt/

infrequent

不频繁
Meaning
Happening rarely or not often.
Example
He made infrequent visits to his hometown after moving abroad.
他在搬到国外后，偶尔才回家乡。
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 /ˌɪnstɪˈtjuːʃənəlaɪz/

institutionalize

制度化
Meaning
to establish something as a formal institution, custom, or practice
Example
The government seeks to institutionalize environmental protection.
政府致力于将环境保护制度化。
C1 adjective /ɪnˈkwɪzɪtɪv/

inquisitive

好奇的
Meaning
Curious or eager to learn and ask questions.
Example
The inquisitive child asked endless questions about the stars.
那个好奇的孩子问了关于星星无数的问题。
C1 adjective /ˈɪrɪtəbl/

irritable

Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
C1 noun ɪnˈdʌldʒəns

indulgence

放纵
Meaning
The practice of allowing oneself to enjoy the pleasure of something.
Example
His indulgence in junk food affected his health.
他在垃圾食品上的放纵影响了他的健康。
C1 noun /ɪˈmɜː.ʃən/

immersion

沉浸
Meaning
Complete engagement in an environment or experience.
Example
Immersion in VR games makes users feel like they are inside the virtual world.
沉浸在虚拟现实游戏中让用户感觉自己仿佛置身于虚拟世界。
C1 adjective ˈɪn.lənd

Inland

内陆
Meaning
Situated in the interior of a country; away from the coast.
Example
Inland transport boosts local trade.
内陆交通促进了当地的贸易。
C1 verb /ɪnˈvælɪdeɪt/

invalidate

使无效
Meaning
To make something not valid or legally acceptable.
Example
The new evidence may invalidate the previous ruling.
新证据可能使之前的裁决无效。
C1 noun /ɪnˈɛk.wɪ.ti/

inequity

不公平
Meaning
Lack of fairness or justice; unequal distribution or treatment.
Example
Social inequity continues to be a global issue.
社会不公平仍然是一个全球性问题。
C1 adjective /ɪmˈpɜːrviəs/

impervious

不透水的
Meaning
Not allowing fluid to pass through; unable to be affected by something.
Example
The jacket is impervious to rain.
这件夹克不透水。
C1 noun /ˌɪn.trəˈvɜːr.ʒən/

introversion

内向
Meaning
The tendency to be inward-looking and shy, preferring solitary activities.
Example
Her introversion made it difficult for her to enjoy large parties.
她的内向让她很难享受大型聚会。
C1 noun /ɪnˈdʌstriəsnəs/

industriousness

勤奋
Meaning
The quality of being hardworking and diligent.
Example
His industriousness earned him a promotion at work.
他的勤奋为他在工作中赢得了晋升。
C1 verb /ˌɪn.trəˈspekt/

introspect

自我反省
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
他常常在做重要决策之前 introspect
C1 adjective /ˌɪnədˈvaɪzəbl/

inadvisable

不建议
Meaning
Not recommended; likely to have undesirable consequences.
Example
It is inadvisable to drive in such heavy rain.
在这种大雨中开车是不建议的。
C1 adjective /ɪmˈpoʊzɪŋ/

imposing

壮观的
Meaning
having an appearance that is grand, impressive, or commanding
Example
The castle is an imposing structure overlooking the valley.
这座城堡是一座壮观的建筑，俯瞰着山谷。
C1 adjective /ˌɪnkəʊˈhɪərənt/

incoherent

不连贯
Meaning
Not clear or easy to understand; lacking logical connection.
Example
His explanation was so incoherent that nobody could follow it.
他的解释如此不连贯，以至于没有人能理解。
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。
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 /ɪnˈflɛksəbl/

inflexible

不灵活
Meaning
Not able to bend or change; unwilling to change ideas or behavior.
Example
His inflexible attitude made negotiations difficult.
他那不灵活的态度使谈判变得困难。
C1 adjective /ˌɪndɪˈvɪzəbl/

indivisible

Meaning
Not able to be divided or separated.
Example
The country's unity was indivisible despite differences.
C1 noun /ɪnˈsɒm.ni.ə/

Insomnia

失眠
Meaning
habitual sleeplessness; inability to sleep; the condition of being unable to sleep
Example
Her chronic insomnia made it difficult for her to concentrate during work hours.
她的慢性失眠让她在工作时难以集中注意力。
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。
C1 noun ˌɪm.pʌlˈsɪv.ɪ.ti

impulsivity

冲动性
Meaning
The tendency to act quickly and without thought or care; lack of self-control.
Example
His impulsivity led him to make reckless choices.
他的冲动性让他做出了鲁莽的决定。
C1 verb /ɪmˈplɔːr/

implore

Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
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。
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。
C1 adjective /ɪˈrɛfjʊtəbəl/

Irrefutable

不可反驳的
Meaning
impossible to deny or disprove; undeniable
Example
The evidence against him was irrefutable.
对他的证据是不可反驳的。
C1 adjective /ɪnˈkɒmp(ə)rəbl/

incomparable

无可比拟
Meaning
Without an equal in quality or excellence; matchless.
Example
The view from the mountain was incomparable.
山顶的景色无可比拟。
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。
C1 adjective /ɪnˈhɛrənt/

inherent

固有的
Meaning
Existing in something as a natural, permanent, or essential quality.
Example
There are inherent risks in extreme sports.
极限运动中存在固有的风险。
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。
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。
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。
C1 adjective /ɪnˈtɒl.ər.ə.bəl/

Intolerable

难以忍受的
Meaning
unable to be endured; extremely unpleasant or painful
Example
The noise from the construction site was intolerable.
建筑工地的噪音让人无法忍受。
C1 noun /ˈɪd.i.əm/

idiom

习语
Meaning
A group of words whose meaning is different from the meanings of the individual words.
Example
The idiom 'break the ice' means to start a conversation in a friendly way.
习语 '打破僵局' 意味着以友好的方式开始对话。
C1 noun /ˌɪntərˌɒpərəˈbɪləti/

interoperability

互操作性
Meaning
The ability of computer systems or software to exchange and make use of information.
Example
The interoperability of different software systems ensures seamless workflow.
不同软件系统的互操作性确保了无缝的工作流程。
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。
C1 noun /ˌɪndɪɡˈneɪʃən/

indignation

愤慨
Meaning
Strong displeasure or anger caused by something unjust, offensive, or insulting.
Example
Public indignation grew after the unfair verdict.
在不公正的裁决之后，公众的愤慨情绪上升。
C1 noun /ɪnˈkɜːrʒən/

incursion

入侵
Meaning
A sudden attack or invasion into a place or territory.
Example
The army repelled the enemy incursion at the border.
军队在边境击退了敌人的入侵。
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 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 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 verb /ɪnˈskraɪb/

inscribe

铭刻
Meaning
to write or carve words or symbols on a surface
Example
They inscribed her name on the trophy.
他们把她的名字刻在奖杯上。
C1 adjective /ɪnˈflæməˌtɔːri/

inflammatory

幸福
Meaning
causing inflammation in the body; arousing anger, hostility, or strong emotion
Example
His inflammatory speech triggered protests across the city.
她在收到奖项时无法隐藏自己的幸福感。
C1 adjective /ɪˈnɔːɡjərəl/

Inaugural

开幕
Meaning
marking the beginning of something; first; opening
Example
The president delivered his inaugural speech.
总统发表了他的开幕演讲。
C1 adjective /ˈɪnbɔːrn/

Inborn

与生俱来的; 天生的; 内在的
Meaning
existing from birth; natural; inherent
Example
She has an inborn talent for music.
她有天生的音乐才能。
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 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。
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 /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 /ˌɪndɪˈskraɪbəbəl/

Indescribable

无法形容
Meaning
impossible to describe or express in words; beyond description
Example
The beauty of the sunset was indescribable.
夕阳的美丽是无法形容的。
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 /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。
C1 adjective /ˌɪnɪkˈsplɪkəbl/

inexplicable

无法解释
Meaning
Impossible to explain or understand.
Example
The sudden disappearance of the file was inexplicable.
文件的突然消失是无法解释的。
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 verb /ɪmˈpɜːrsəneɪt/

impersonate

假扮
Meaning
to pretend to be another person in order to entertain or deceive
Example
He was arrested for trying to impersonate a police officer.
他因尝试冒充一名警察而被逮捕。
C1 verb /ˈɪrɪˌɡeɪt/

irrigate

灌溉
Meaning
to supply water to land or crops; to wash out a wound with water
Example
Farmers irrigate their fields during dry seasons.
农民在干旱季节灌溉他们的田地。
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 /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/verb /ˈɪnsɛns/

incense

香火 / 激怒
Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
香火的气味充满了寺庙，但他粗鲁的话让她非常生气。
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。
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。
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。
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。
C1 noun /ɪnˌkɑːsəˈreɪʃən/

incarceration

监禁
Meaning
the state of being imprisoned or confined
Example
The criminal faced years of incarceration for his crimes.
罪犯因其罪行被监禁多年。
C1 noun ˌɪnfɛsˈteɪʃən

infestation

侵扰, 在某个地方出现异常大量的昆虫或动物
Meaning
The presence of an unusually large number of insects or animals in a place, causing damage or disease.
Example
The infestation of ants in the kitchen led to immediate pest control measures.
厨房里蚂蚁的侵扰导致了立即采取害虫控制措施。
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。
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 /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。
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 noun /ɪˈrɛlɪvənsi/

irrelevancy

无关性
Meaning
the state of being unrelated or unimportant to the matter at hand
Example
The judge dismissed the argument because of its irrelevancy to the case.
法官因该论点与案件无关而将其驳回。
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。
C1 adjective /ɪnˈvɜːs/

Inverse

相反的；反向的
Meaning
opposite in order, nature, or effect; reversed
Example
There is an inverse relationship between price and demand.
价格和需求之间存在逆向关系。
C1 verb /ɪmˈpɛrɪl/

imperil

使处于危险中
Meaning
To put in danger or at risk.
Example
Reckless driving can imperil the lives of others.
鲁莽驾驶可能会危及他人的生命。
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 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 ˌɪn.təˈmɪt.ənt

intermittent

间歇的
Meaning
Happening irregularly, not continuously.
Example
The rain was intermittent throughout the day.
雨整天都间歇不断。
C1 noun /ɪmˈprɪzənmənt/

imprisonment

监禁
Meaning
the act of putting someone in prison; the state of being confined as punishment
Example
He faced imprisonment for violating the court order.
他因违反法院命令而面临监禁。
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

即时
Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
温度变化几乎是即时的。
C1 noun /ˈɪntərˌluːd/

interlude

插曲
Meaning
A short period of time that comes between two events; an interval.
Example
There was a brief musical interlude between the two acts of the play.
在剧本的两个场景之间有一个简短的音乐插曲。
C1 verb /ɪnˈkrɪmɪˌneɪt/

incriminate

使犯罪
Meaning
to make someone appear guilty of a crime or wrongdoing
Example
The new evidence could incriminate the suspect in the robbery case.
新证据可能会让嫌疑犯在抢劫案件中使犯罪。
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。
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。
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 noun /ɪmˌpɜː.sənˈeɪ.ʃən/

impersonation

冒充他人
Meaning
The action of pretending to be another person for the purpose of entertainment or fraud.
Example
Online impersonation is a serious cybercrime.
网络冒充他人是一种严重的网络犯罪。
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 /ˌɪnsəˈfɪʃənsi/

insufficiency

不足
Meaning
The state of not being enough or not being adequate.
Example
The project failed due to the insufficiency of funds.
由于资金不足，项目失败了。
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。
C1 noun /ˈɪn.trə.vɜːrt/

introvert

内向
Meaning
A person who tends to be shy and prefers spending time alone rather than in groups.
Example
As an introvert, he preferred reading over attending parties.
作为一个内向的人，他更喜欢读书而不是参加派对。
C1 adjective /ˌɪnɪkˈskjuːzəbl/

inexcusable

不可原谅的
Meaning
Too bad to be justified or overlooked; unforgivable.
Example
His rude behavior was inexcusable.
他的粗鲁行为是不可原谅的。
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 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 ˌɪnfrəˈstrʌktʃərəl dɪˈveləpmənt

infrastructural development

基础设施发展
Meaning
The process of building and improving the basic physical and organizational structures and facilities needed for the operation of a society or enterprise.
Example
Infrastructural development is necessary for efficient recycling.
基础设施发展对高效的回收至关重要。
C1 adjective /ɪˈrɛvərənt/

irreverent

不敬的
Meaning
showing a lack of respect for people or things that are usually respected
Example
The comedian’s irreverent jokes offended some of the audience.
那位喜剧演员的不敬笑话冒犯了一些观众。
C1 adjective /ˈɪmpjəd(ə)nt/

impudent

无礼的，厚颜无耻的
Meaning
not showing due respect for another person; rude
Example
The impudent child talked back to the teacher.
那个无礼的孩子顶撞老师。
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。
C1 adjective /ˌɪnækˈsɛsəbl/

inaccessible

无法接近
Meaning
unable to be reached, entered, or understood
Example
The remote village is almost inaccessible during the rainy season.
这个偏远的村庄在雨季几乎是无法接近的。
C1 verb /ɪnˈterəˌɡeɪt/

interrogate

审问
Meaning
to ask someone questions in a thorough and formal way; to question intensively
Example
The police interrogated the suspect for hours.
警察审问嫌疑人几个小时。
C1 adjective /ɪnˈdiːsənt/

indecent

不雅的
Meaning
not conforming to accepted standards of behavior or morality; improper or offensive
Example
He was warned for making an indecent remark during the meeting.
他因为说了不雅的话而受到警告。
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。
C1 noun /ɪnˈtruː.ʒən/

intrusion

未经授权的进入
Meaning
Unauthorized entry into a system or place without permission
Example
The company detected an intrusion in its server.
公司在其服务器中发现了入侵。
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 noun /ɪˌluːmɪˈneɪʃən/

illumination

Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
C1 adjective /ɪmˈpɑːrʃəl/

Impartial

公正的; 中立的
Meaning
treating all sides fairly; unbiased; neutral
Example
A good judge must remain impartial throughout the trial.
一个好的法官必须在整个审判过程中保持公正。
C1 adverb /ˈɪnwərdli/

inwardly

内心
Meaning
In the mind or spirit; not outwardly visible.
Example
She smiled outwardly but inwardly she was worried.
她外表微笑，但内心却感到担忧。
C1 adjective /ɪmˈpjʊər/

Impure

不纯
Meaning
contaminated; not clean; mixed with foreign substances
Example
The impure water caused health problems in the village.
不纯的水在村庄里引起了健康问题。
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。