Impulse
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B2 noun /ˈɪm.pʌls/

Impulse

冲动; 突然的欲望
Meaning
a sudden strong and unreflective urge or desire to act; a driving force or motivation
Example
She bought the expensive dress on impulse and later regretted the purchase.
她冲动购买了那件昂贵的衣服，后来对这笔购买感到后悔。
C2 adjective /ˌɪrɪˈkɒnsɪləbl/

irreconcilable

不可调和的
Meaning
impossible to make compatible or bring into harmony; unable to resolve differences
Example
The couple separated due to irreconcilable differences.
这对夫妇因不可调和的分歧而分开。
C2 noun /ˈɪnfəmi/

infamy

幸福
Meaning
the state of being well known for some bad quality or deed
Example
His name will live in infamy for the crimes he committed.
她在收到奖项时无法掩饰她的幸福。
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 noun /ˈɪmɪˌteɪtər/

imitator

模仿者
Meaning
a person who copies the behavior, style, or actions of others
Example
He became famous as an imitator of popular singers.
他因模仿流行歌手而出名。
C2 noun /ˌɪn.trəˈɡreʃ.ən/

introgression

基因引入
Meaning
The transfer of genetic information from one species to another through repeated backcrossing.
Example
Introgression plays a significant role in plant breeding.
基因引入在植物育种中起着重要作用。
B1 verb ɪnˈspaɪər

inspire

激励
Meaning
To fill someone with the urge or ability to do or feel something, especially creative or noble.
Example
Artemis seeks to inspire future generations.
阿尔忒弥斯寻求激励未来的几代人。
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 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。
B2 noun /ɪnˈvɛstɪˌɡeɪtər/

investigator

幸福
Meaning
a person who carries out a formal inquiry or investigation
Example
The investigator gathered evidence from the crime scene.
当她获得奖项时，她无法掩饰自己的幸福。
C1 adjective /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。
C2 verb /ɪˈreɪdieɪt/

irradiate

辐照
Meaning
to shine light on something; to expose to radiation; to illuminate or brighten
Example
The scientist used a lamp to irradiate the sample.
科学家用灯泡辐照了样本。
C2 noun /ˌɪnkəˈpæsəti/

incapacity

无能
Meaning
the lack of ability, power, or fitness to do something
Example
His mental incapacity prevented him from making important decisions.
他的心理无能使他无法做出重要决策。
C2 adjective /ɪnˈtɛsteɪt/

intestate

死于无遗嘱
Meaning
Having died without leaving a valid will.
Example
She died intestate, so her assets were distributed by law.
她死于无遗嘱，因此她的财产由法律分配。
C1 adjective /ˌɪntəˈrɑːɡətɪv/

interrogative

疑问的
Meaning
Relating to or conveying a question; in grammar, used to form questions.
Example
She raised an interrogative eyebrow when she heard the news.
她听到消息时，抬起了疑问的眉毛。
B2 verb /ˌɪntərˈviːn/

intervene

介入
Meaning
To come between people, groups, or events, often to prevent conflict or improve a situation.
Example
The teacher had to intervene to stop the fight between the students.
老师不得不介入，阻止学生之间的打架。
C1 noun ɪnˈdɪdʒɪnəs trəˈdɪʃənz

Indigenous Traditions

原住民传统
Meaning
Cultural practices, beliefs, and customs that have been passed down through generations among native peoples.
Example
Indigenous traditions in the Chittagong Hill Tracts are unique.
吉大港山区的原住民传统独特。
A1 conjunction /ɪf/

if

如果
Meaning
used to introduce a condition or supposition
Example
If it rains tomorrow, we will stay home.
如果明天下雨，我们就待在家里。
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。
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。
C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

语调
Meaning
The rise and fall of tone in speech and pronunciation.
Example
Proper intonation enhances the clarity of a speech.
正确的语调提高演讲的清晰度。
B2 noun /aɪˈdiː/

id

身份证件
Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
请在入口处出示你的身份证件。
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 /ˌɪnkənˈɡruːəti/

incongruity

不一致
Meaning
The state of being inconsistent or out of place.
Example
The incongruity of his cheerful mood during the funeral shocked everyone.
在葬礼上，他愉快的心情与情境的不一致让所有人都震惊了。
C2 noun /ɪˈmɒdəsti/

immodesty

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

intercession

代祷
Meaning
the act of intervening or pleading on behalf of another person
Example
The prisoner was released due to the intercession of influential leaders.
由于有影响力的领导人的代祷，囚犯被释放了。
C1 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。
B2 adjective /ˌɪnsɪˈkjʊə/

insecure

不安全的
Meaning
not confident or assured; uncertain and anxious
Example
She felt insecure about her performance in the exam.
她在考试中对自己的表现感到不安。
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。
C2 verb /ˌɪn.trəˈmɪt/

intromit

引入
Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
医生小心地将仪器引入伤口。
C1 adjective /ɪnˈstrʌktɪv/

instructive

有教育意义的
Meaning
useful and informative; providing knowledge or instruction
Example
The lecture was highly instructive and engaging.
这场讲座非常有教育意义且引人入胜。
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

永恒的; 不朽的; 不会腐烂的
Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
经典艺术的永恒美丽继续激励着一代又一代。
C1 noun /ˌɪməˈtjʊərəti/

immaturity

不成熟
Meaning
the state of not being fully developed emotionally, mentally, or physically; lack of maturity
Example
His immaturity made it difficult for him to handle responsibility.
他的不成熟让他难以承担责任。
B2 adjective /ɪnˈvɪz.ə.bəl/

Invisible

看不见的
Meaning
unable to be seen; not visible to the eye
Example
The bacteria are invisible without a microscope.
细菌在没有显微镜的情况下看不见。
C1 adverb /ˌɪnsɪˈdɛntəli/

incidentally

顺便
Meaning
by the way; used to introduce a remark not directly related to the main subject
Example
Incidentally, did you know that she studied in Paris?
顺便问一下，你知道她曾经在巴黎学习吗？
C2 adjective /ɪnˈseɪʃiət/

insatiate

无法满足
Meaning
impossible to satisfy; always wanting more
Example
He had an insatiate desire for power.
他有一个无法满足的权力愿望。
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。
B1 noun /ɪnˈstrʌktər/

instructor

教练
Meaning
A person who teaches a subject or skill.
Example
The driving instructor was very patient with new learners.
驾校教练对新学员非常耐心。
C2 adjective /ˌɪnkænˈdɛsənt/

incandescent

白炽的
Meaning
emitting light as a result of being heated; extremely bright or passionate
Example
The incandescent lamp lit up the entire hall.
白炽灯照亮了整个大厅。
C2 adjective /ɪmˈpɛn.ɪ.tənt/

impenitent

不悔
Meaning
Not feeling regret or shame about one's actions.
Example
The criminal remained impenitent after the trial.
犯罪者在审判后依然不悔。
C1 adjective /ɪnˈedəbəl/

Inedible

不可食用
Meaning
not suitable or safe for eating; not edible
Example
The mushrooms were poisonous and completely inedible.
蘑菇是有毒的，完全不可食用。
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 adjective /ˌaɪdiəˈlɪstɪk/

Idealistic

理想主义的
Meaning
pursuing high principles or ideals; unrealistically optimistic
Example
She has an idealistic view of changing the world.
她对改变世界有着理想主义的看法。
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 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。
B2 noun ˌɪmplɪmenˈteɪʃən

implementation

实施
Meaning
The process of putting a decision or plan into effect; execution.
Example
Proper implementation of policies is crucial.
政策的正确实施至关重要。
C1 noun /ɪnˈsaɪtmənt/

incitement

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

inculpate

指责
Meaning
To blame or accuse someone of wrongdoing.
Example
The evidence seemed to inculpate the suspect in the crime.
证据似乎将嫌疑犯牵连到这起犯罪中。
C2 noun /ˌɪn.ʌnˈdeɪ.ʃən/

inundation

洪水
Meaning
The act of flooding or overwhelming with water or things.
Example
The town suffered from a severe inundation after the heavy rains.
该市在暴雨后遭受了严重的洪水。
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。
C2 noun /ˌɪntərˈsɛsər/

intercessor

调解人
Meaning
a person who intervenes or pleads on behalf of another
Example
He acted as an intercessor to resolve the conflict between the two families.
他作为调解人解决了两个家庭之间的冲突。
B1 noun ɪnˈven.ʃən

invention

发明
Meaning
The action of inventing something, typically a process or device.
Example
The invention revolutionized communication.
这个发明彻底改变了通信。
C1 adjective, noun /ˈɪnvəlɪd/ (adjective), /ɪnˈvælɪd/ (noun)

invalid

无效的
Meaning
Not valid; having no force or effect. Also refers to a person too weak or ill to care for themselves.
Example
The court declared the contract invalid.
法院宣布合同无效。
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 adjective /ɪnˈsɪdiəs/

insidious

阴险的
Meaning
Proceeding in a gradual, subtle way but with harmful effects.
Example
The insidious spread of misinformation can damage trust.
错误信息的阴险传播可能会损害信任。
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。
C1 verb /ɪmˈpɛl/

impel

Meaning
to drive, force, or urge someone to do something
Example
Her curiosity impelled her to open the mysterious box.
C2 conjunction /ˌɪnəzˈmʌtʃ æz/

inasmuch-as

因为
Meaning
Because; since.
Example
He cannot attend, inasmuch as he is unwell.
他不能参加，因为他生病了。
C2 adjective ɪnˈfiː.zə.bəl

infeasible

不可行
Meaning
Not possible to do easily or conveniently; impracticable.
Example
Restoring the forest may become infeasible if destruction continues.
如果破坏继续下去，恢复森林可能变得不可行。
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 /ɪnˈsɛp(ə)rəbəl/

inseparable

形影不离
Meaning
Unable to be separated or always together.
Example
The two friends have been inseparable since childhood.
这两个朋友从小就形影不离。
B1 adjective /ˈɪrɪteɪtɪŋ/

irritating

烦人的
Meaning
causing annoyance, impatience, or mild anger
Example
The constant noise from the street is extremely irritating.
街道上传来的持续噪音非常烦人。
C2 noun /ˈɪnroʊd/

inroad

进展
Meaning
An advance or significant progress, often at the expense of something else.
Example
The company made significant inroads into the mobile market.
该公司在移动市场取得了显著进展。
C2 verb /ɪnˈsɪnəˌreɪt/

incinerate

焚烧
Meaning
to burn something completely until it is reduced to ashes
Example
The city decided to incinerate the medical waste for safety.
城市决定为安全起见销毁医疗废物。
C2 adjective /ˌɪnˈekspɜːrt/

inexpert

不熟练的
Meaning
not skilled or experienced; lacking expertise
Example
The inexpert handling of the machine caused several mistakes.
对机器的不熟练操作导致了多次错误。
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.
B2 adjective ˌɪnɪˈfɛktɪv

ineffective

无效
Meaning
Not producing any significant or desired effect; not achieving the intended result.
Example
Rote learning often proves to be ineffective.
死记硬背往往是无效的。
C1 adjective ˌɪn.təˈdɪs.ɪ.plɪ.nər.i

interdisciplinary

跨学科的
Meaning
Relating to more than one branch of knowledge.
Example
The interdisciplinary approach in education enhances problem-solving skills.
教育中的跨学科方法提高了解决问题的能力。
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 /ˈɪɡ.ni.əs/

igneous

火成
Meaning
Formed through the cooling and solidification of magma or lava.
Example
Granite is an igneous rock commonly used in construction.
花岗岩是一种常用于建筑的火成岩。
C1 noun /ɪmˈpɛd.ɪ.mənt/

impediment

障碍
Meaning
A hindrance or obstruction in doing something; something that prevents progress.
Example
Lack of funds is a major impediment to the project.
资金不足是项目的主要障碍。
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。
B2 noun, verb /ˈɪnstɪˌtjuːt/

institute

学院
Meaning
as a noun, an organization founded for a specific purpose; as a verb, to establish or initiate
Example
The university decided to institute new rules for the library.
大学决定为图书馆制定新规则。
C2 adjective /ɪmˈpɑːlɪtɪk/

impolitic

不明智的
Meaning
Unwise or imprudent; not showing good judgment.
Example
It would be impolitic to criticize them openly.
公开批评他们是不明智的。
B2 adjective /ɪmˈpɜːrfɪkt/

imperfect

不完美
Meaning
Not perfect; having faults or flaws.
Example
The painting was beautiful despite being imperfect.
这幅画很美，尽管它不完美。
B2 noun /ˈɪnvənˌtɔːri/

inventory

清单
Meaning
A complete list of items, such as goods in stock or property.
Example
The shopkeeper checked the inventory before opening the store.
店主在开店前检查了清单。
B2 noun /ɪnˈkwaɪəri/ or /ˈɪnkwəri/

inquiry

调查 / 查询
Meaning
An act of asking for information; an investigation into something.
Example
The committee launched an inquiry into the financial irregularities.
委员会启动了对金融不规范行为的调查。
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。
B2 verb /ɪnˈkɔːrpəreɪt/

incorporate

合并
Meaning
to include something as part of a whole; to form a corporation
Example
The new design incorporates advanced technology.
新设计融合了先进技术。
C2 noun /ˈɪntərˌloʊpər/

interloper

闯入者
Meaning
A person who becomes involved in a situation or place where they are not wanted.
Example
He felt like an interloper at the private family gathering.
他在私人家庭聚会中感到像一个闯入者。
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。
B2 adjective /ɪnˈfɔːrmətɪv/

Informative

有教育意义的
Meaning
giving or providing useful information; educational; instructive
Example
The documentary was very informative and educational.
这部纪录片信息量很大，具有教育意义。
C2 adjective /ˌɪndɪˈsɒljʊbl/

indissoluble

不可分割的
Meaning
Unable to be destroyed, broken, or dissolved.
Example
Marriage was once considered an indissoluble bond.
婚姻曾被视为不可分割的纽带。
C1 noun /ˌɪrɪˌspɒnsəˈbɪləti/

irresponsibility

不负责任
Meaning
lack of responsibility or accountability; failure to act in a reliable or sensible way
Example
The accident was caused by his irresponsibility at work.
事故是由于他在工作中的不负责任造成的。
C1 noun /ˌɪntɪˈmeɪʃən/

intimation

暗示
Meaning
A subtle or indirect hint or suggestion.
Example
She gave no intimation of her plans.
她没有给出任何关于她计划的暗示。
C2 adjective /ˌɪndɪˈsɜːrnəbl/

indiscernible

难以察觉的
Meaning
Impossible or difficult to see, notice, or distinguish.
Example
The difference between the two shades was almost indiscernible.
这两种色调之间的差异几乎难以察觉。
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。
C2 noun /ɪmˌprɒb.əˈbɪl.ə.ti/

Improbability

不可能性
Meaning
the quality or state of being improbable; unlikely to be true or to happen
Example
The improbability of winning the lottery twice didn't stop her from buying tickets.
两次赢得彩票的可能性几乎为零，但她仍然买了票。
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 ɪˌræʃ.ənˈæl.ɪ.ti

irrationality

非理性, 不合理, 荒谬
Meaning
The quality of being illogical or unreasonable; lack of rational thought.
Example
His decision was driven by complete irrationality.
他的决定完全是基于非理性。
B1 noun ˈɪmpækt

impact

影响
Meaning
A strong effect or influence; the action of one object coming forcibly into contact with another.
Example
The decision had great impact.
这个决定产生了巨大影响。
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。
C2 adjective /ˌɪnɪkˈstrɪkəbl/

inextricable

无法分开
Meaning
Impossible to separate or escape from.
Example
The two friends shared an inextricable bond.
这两个朋友共享了一个无法分开的联系。
B1 noun ɪnˈvestmənt

investment

投资
Meaning
The action or process of investing money for profit or material result.
Example
Investment in waste management infrastructure is essential.
废物管理基础设施的投资至关重要。
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。
B2 verb /ˈɪl.ə.streɪt/

illustrate

插图
Meaning
to explain or make something clear by using examples, pictures, or comparisons
Example
The teacher used diagrams to illustrate the concept.
老师用图表来说明这个概念。
C2 noun /ˌɪdiəˈsɪŋkrəsi/

idiosyncrasy

特徵
Meaning
A distinctive or peculiar characteristic, habit, or mannerism unique to an individual.
Example
One of her idiosyncrasies was humming while working.
她的一个偶发性特征是工作时哼歌。
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 noun /ɪnˈdɪf.ər.əns/

Indifference

冷漠; 漠视; 冷淡
Meaning
lack of interest, concern, or sympathy; the state of not caring about something
Example
His indifference to his studies resulted in poor grades throughout the semester.
他对学业的冷漠导致了整个学期的成绩很差。
A2 noun /ˌɪn.trəˈdʌk.ʃən/

introduction

引言
Meaning
the action of introducing something or someone; an opening or beginning part
Example
The professor gave a brief introduction before starting the lecture.
教授在开始讲座之前做了简短的引言。
B2 verb /ɪnˈdʌldʒ/

indulge

纵容
Meaning
to allow oneself to enjoy something enjoyable, often excessively
Example
He indulged in a piece of chocolate cake after dinner.
他在晚餐后沉浸在一块巧克力蛋糕中。
C1 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。
B2 noun /ˈɪnfənt/

infant

婴儿
Meaning
A very young child or baby.
Example
The infant was sleeping peacefully in the cradle.
婴儿在摇篮中安静地睡着。
B2 adjective /ˌɪnkənˈsɪstənt/

inconsistent

不一致
Meaning
Not staying the same throughout; lacking harmony or regularity.
Example
His answers were inconsistent and confusing.
他的回答不一致且令人困惑。
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 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。
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。
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。
C2 adjective /ɪmˈpruːdənt/

imprudent

鲁莽
Meaning
Not showing care for the consequences of an action.
Example
It was imprudent to drive in such stormy weather.
在如此暴风雨的天气下开车是鲁莽的。
C1 adjective /ˌɪnədˈvɜːrtənt/

inadvertent

无意的, 非故意的
Meaning
Not resulting from or achieved through deliberate planning; unintentional.
Example
Her inadvertent mistake caused a delay in the project.
她的无意错误导致了项目的延迟。
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。
B2 noun ˌɪr.ɪˈɡeɪ.ʃən

irrigation

灌溉
Meaning
The artificial application of water to land or soil.
Example
Irrigation systems improve crop yields in dry regions.
灌溉系统提高了干旱地区作物的产量。
B2 adjective /ɪˈmædʒɪnəbl/

imaginable

可想象的
Meaning
Capable of being imagined or conceived.
Example
They offered every imaginable type of food at the festival.
他们在节日上提供了所有可以想象的食物类型。
B2 noun /ɪnˈspekʃən/

inspection

检查
Meaning
a careful examination of something, especially to check that it is correct or safe
Example
The building passed the safety inspection last week.
该建筑上周通过了安全检查。
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。
B1 verb /ˈɪndʒər/

injure

伤害
Meaning
to cause physical harm or damage to someone or something
Example
He injured his leg while playing football.
他踢足球时伤了腿。
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。
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。
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。
C2 noun /aɪˈoʊtə/

iota

极小的数量
Meaning
An extremely small amount.
Example
He did not show an iota of fear.
他一点儿恐惧都没表现出来。