impulsivity
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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 adjective /ɪnˈtræk.tə.bəl/

intractable

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

incline

倾向
Meaning
to feel willing or favorably disposed toward something; to bend or tilt
Example
She is inclined to agree with the proposal.
她倾向于同意这个提议。
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。
C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/

Inadvertently

无意中; 不小心; 错误地
Meaning
without being aware of what you are doing; unintentionally; by mistake
Example
She inadvertently deleted the important file while cleaning her computer.
她在清理计算机时无意中删除了重要文件。
C1 verb /ˈɪnfɪltreɪt/

infiltrate

渗透
Meaning
to secretly enter or gain access to a place or group
Example
The spies managed to infiltrate the enemy base.
间谍们设法渗透敌人基地。
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 noun ɪmˈpɛə(r)mənt

impairment

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

intimidation

威胁
Meaning
The action of frightening or threatening someone to make them do something.
Example
The workers reported cases of intimidation by the management.
工人报告了管理层威胁的案例。
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 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。
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 /ˈɪmɪdʒəri/

imagery

意象
Meaning
visually descriptive or figurative language, especially in a literary work
Example
The poet's use of imagery brought the scene to life.
诗人的意象使用使场景栩栩如生。
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 /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。
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。
C1 adjective /ˈɪnsələnt/

insolent

无礼的, 傲慢的
Meaning
showing a rude and arrogant lack of respect
Example
The insolent student refused to follow the teacher's instructions.
那个无礼的学生拒绝听从老师的指示。
C1 adjective /ˌɪn.səbˈstæn.ʃəl/

insubstantial

不实的
Meaning
Lacking strength, substance, or solidity.
Example
The evidence provided was insubstantial and unconvincing.
提供的证据是不实的且令人信服。
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 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 /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 ɪnˈdʒiː.ni.əs

ingenious

巧妙
Meaning
Showing inventiveness and skill; clever, original, and inventive.
Example
His ingenious ideas transformed modern physics.
他的巧妙想法改变了现代物理学。
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 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。
C1 noun /ˈɪmɪnəns/

imminence

即将发生，临近状态
Meaning
the state of being about to happen
Example
The imminence of the storm forced people to take shelter.
风暴的临近使人们不得不寻找庇护所。
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 adjective ˌɪm.pəˈsɛp.tɪ.bəl

imperceptible

无法察觉的
Meaning
So subtle or gradual that it is difficult to notice or perceive
Example
The changes in his behavior were imperceptible at first.
他行为中的变化一开始几乎是无法察觉的。
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 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。
C1 verb /ɪnˈkɜːr/

incur

遭受
Meaning
To bring upon oneself something undesirable, usually as a result of actions.
Example
He incurred a fine for parking in the wrong place.
他因在错误的地方停车而被罚款。
C1 verb /ɪmˈplɔːr/

implore

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

impel

Meaning
to drive, force, or urge someone to do something
Example
Her curiosity impelled her to open the mysterious box.
C1 noun ˌɪntədɪˈpɛndənsi

interdependency

相互依存
Meaning
The dependence of two or more people or things on each other.
Example
The interdependency of the countries led to greater cooperation.
各国之间的相互依存促进了更大的合作。
C1 adjective /ˌɪndɪˈstrʌktəbl/

indestructible

无法摧毁
Meaning
Impossible to destroy or break.
Example
The superhero's shield was said to be indestructible.
有人说超级英雄的盾牌是无法摧毁的。
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 noun ˌɪn.tuˈɪʃ.ən

intuition

直觉
Meaning
The ability to understand something immediately, without the need for conscious reasoning.
Example
Her intuition told her something was wrong.
她的直觉告诉她有些不对劲。
C1 adverb /ˌɪn.dɪˈskrɪm.ɪ.nət.li/

Indiscriminately

无差别地
Meaning
without making careful distinctions; randomly; without discrimination
Example
The company fired employees indiscriminately without considering their performance.
公司无差别地解雇了员工，没考虑他们的表现。
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。
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 adjective /ˌɪməˈtɪəriəl/

immaterial

无关紧要
Meaning
Not important or relevant; lacking physical substance.
Example
The judge ruled that the argument was immaterial to the case.
法官裁定，该论点与案件无关。
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 /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 adjective /ˌɪnkənˈsiːvəbl̩/

inconceivable

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

impertinent

无礼的
Meaning
rude and showing a lack of respect
Example
It was impertinent of him to question the manager's decision.
他质疑经理的决定是无礼的。
C1 verb ɪˈnɪʃɪeɪtɪd

initiated

启动
Meaning
Caused a process or action to begin; started something.
Example
The project was initiated to enhance marine biodiversity.
该项目已启动以促进海洋生物多样性。
C1 verb /ɪmˈpiːtʃ/

impeach

Meaning
To charge a public official with misconduct while in office.
Example
The parliament voted to impeach the president.
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。
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 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 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 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。
C1 noun ˌɪnˈsaɪtfʊlnɪs

insightfulness

洞察力，分析能力
Meaning
The capacity to gain an accurate and deep intuitive understanding of a person or thing.
Example
His insightfulness helped solve the complex problem.
他的洞察力帮助解决了复杂的问题。
C1 adjective ɪnˈkʌm.bənt

incumbent

有义务的
Meaning
necessary for (someone) as a duty or responsibility.
Example
It is incumbent upon all citizens to obey the law.
所有公民都有义务遵守法律。
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 /ɪˈnɒkjuəs/

innocuous

无害的
Meaning
Not harmful or offensive.
Example
His remark was completely innocuous and not meant to offend anyone.
他的评论完全无害，并且没有冒犯任何人的意思。
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 verb /ɪnˈfleɪt/

inflate

充气；抬高
Meaning
to fill with air or gas so it expands; to increase excessively or artificially
Example
The mechanic inflated the tire to the correct pressure.
技工把轮胎充到了正确的气压。
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 adjective ˌɪn.trəˈspek.tɪv

introspective

内省的
Meaning
Characterized by or given to introspection; examining one's own thoughts and feelings.
Example
Writers tend to be highly introspective individuals.
作家通常是高度内省的人。
C1 noun /ɪˈmiːdiəsi/

immediacy

即时性, 紧迫感
Meaning
The quality of bringing one into direct and instant involvement with something, giving rise to a sense of urgency or excitement.
Example
The immediacy of digital communication has reshaped business operations.
数字通信的即时性已经改变了商业操作。
C1 adjective ˈɪn.tər.ɪm

interim

临时
Meaning
In or for the intervening period; provisional or temporary.
Example
Interim governments manage transitional phases.
临时政府管理过渡阶段。
C1 verb /ɪnˈkɑːrsəreɪt/

incarcerate

监禁
Meaning
to imprison or confine someone
Example
The authorities incarcerated the criminal after the trial.
当局在审判后将罪犯监禁。
C1 verb /ɪˈnɔːɡjʊreɪt/

inaugurate

Meaning
To formally begin or introduce something, especially with a ceremony.
Example
The mayor will inaugurate the new bridge tomorrow.
C1 noun /ˌɪnkoʊˈhɪrəns/

incoherence

不一致
Meaning
The quality of being unclear, confused, or lacking logical connection.
Example
His speech was full of incoherence and difficult to follow.
他的演讲充满了不一致，难以跟随。
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 /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 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 noun /ɪnˈædɪkwəsi/

inadequacy

不足
Meaning
lack of sufficient ability, quality, or strength; a feeling of not being good enough
Example
She struggled with feelings of inadequacy at work despite her strong qualifications.
尽管资历很强，她在工作中仍感到不足。
C1 verb /ɪnˈsɪnjueɪt/

insinuate

Meaning
To suggest or hint something indirectly and often unpleasantly.
Example
He insinuated that she had lied about her qualifications.
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 /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 /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 /ˌɪndɪˈstɪŋkt/

indistinct

模糊的
Meaning
Not clear or sharply defined; vague or blurred.
Example
The sound of voices was indistinct in the distance.
远处的声音是模糊的。
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 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 /ˌaɪ.diˈɒl.ə.dʒi/

ideology

意识形态
Meaning
A system of ideas and ideals, especially one that forms the basis of economic or political theory and policy.
Example
Democracy is based on the ideology of freedom and equality.
民主基于自由和平等的意识形态。
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 /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 /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 /ɪnˈdʌktɪv/

inductive

归纳的
Meaning
characterized by the inference of general laws from particular instances; reasoning from specific cases to general principles
Example
The scientist used inductive reasoning to form a hypothesis.
科学家使用归纳推理来形成假设。
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

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

inaugurated

开幕
Meaning
Begin or introduce (a system, policy, or period) formally.
Example
The organization was inaugurated officially.
该组织已正式开幕。
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 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 /ɪˈrɛvəkəbl/

irrevocable

不可撤销
Meaning
Not able to be revoked, changed, or undone.
Example
She made an irrevocable decision to leave the company.
她做出了一个不可撤销的决定离开公司。
C1 verb /ɪnˈdʌkt/

induct

Meaning
to formally admit someone into a position, organization, or office
Example
She was inducted into the university's honor society.
C1 adjective /ˈɪnərmoʊst/

Innermost

最深的; 最个人的
Meaning
most private and secret; deepest; most personal
Example
She shared her innermost feelings with her closest friend.
她与最亲密的朋友分享了她最深的感受。
C1 verb /ɪnˈvɪɡ.ər.eɪt/

invigorate

振奋
Meaning
To give strength or energy to someone or something.
Example
A morning walk can invigorate both body and mind.
晨跑可以振奋身心。
C1 noun /ɪnˈfɜː.mə.ti/

Infirmity

虚弱；疾病；虚弱
Meaning
physical or mental weakness; a disease or ailment; frailty
Example
Despite his advanced age and various infirmities, he remained mentally sharp and alert.
尽管他年事已高，且有多种病痛，他仍保持着敏捷和警觉。
C1 noun /ˌɪm.pəˈzɪʃ.ən/

Imposition

强加; 负担; 不公平的要求
Meaning
the action or process of imposing something or of being imposed; an unfair burden or demand
Example
The imposition of new taxes without consultation angered the citizens greatly.
未经咨询强加的新税让市民极为愤怒。
C1 noun ˌɪndɪˈspensəbl səˈpɔːrt

indispensable support

不可或缺的支持
Meaning
Essential assistance that cannot be done without; absolutely necessary help.
Example
Volunteers provide indispensable support to communities.
志愿者为社区提供不可或缺的支持。
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 /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 /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 noun /ˈɪnkwest/

inquest

调查
Meaning
A legal or official inquiry, especially into the cause of a death.
Example
The inquest revealed the cause of the accident.
调查揭示了事故的原因。
C1 adjective /ɪˈlʌstriəs/

illustrious

著名
Meaning
Well known, respected, and admired for past achievements.
Example
She had an illustrious career in medicine.
她在医学界有着著名的事业。
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 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 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。
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 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 /ɪnˈɔːdəbl/

inaudible

听不见的
Meaning
Unable to be heard.
Example
Her voice was almost inaudible over the noise.
她的声音几乎在噪音中听不见。
C1 adjective /ɪnˈvɪnsəbl/

invincible

不可战胜
Meaning
too powerful to be defeated or overcome
Example
The team seemed invincible after winning ten matches in a row.
这支队伍在连续赢得十场比赛后，看起来不可战胜。
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 /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 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 /ɪnˈkrɛdjələs/

incredulous

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

ingrained

根深蒂固
Meaning
Firmly fixed or established; deeply rooted and difficult to change.
Example
His ingrained habits were hard to break.
他的根深蒂固的习惯很难改变。
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 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 /ˈɪmpətənt/

impotent

无能
Meaning
Lacking power, ability, or strength to take effective action.
Example
The citizens felt impotent against the corrupt system.
公民在腐败的系统面前感到无能为力。
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 /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 /ɪˈluː.sɪv/

Illusive

虚幻的; 看似存在但不真实; 欺骗性的
Meaning
deceptive; appearing to exist but not real; misleading
Example
The promise of easy money proved to be illusive and misleading.
轻松赚钱的承诺证明是虚幻和欺骗性的。
C1 noun /ɪnˈdjuːsmənt/

inducement

诱因
Meaning
something that persuades or encourages someone to do something
Example
The company offered a bonus as an inducement to employees.
公司提供了奖金作为员工的诱因。
C1 adjective /ɪnˈseɪʃəbl̩/

insatiable

不可满足的
Meaning
impossible to satisfy; always wanting more
Example
Her insatiable curiosity drove her to read every book in the library.
她那不可满足的好奇心促使她阅读了图书馆里的所有书籍。