immutable
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C1 adjective /ɪˈmjuː.tə.bəl/

immutable

不变的
Meaning
Unchangeable, permanent, or fixed
Example
The laws of physics are considered immutable.
物理定律被认为是不变的。
C1 noun /ˌɪn.səˌbɔːr.dɪˈneɪ.ʃən/

insubordination

不服从
Meaning
Defiance of authority; refusal to obey orders.
Example
The soldier was punished for insubordination during the mission.
士兵因在任务中不服从命令而受到惩罚。
B1 noun /ɪnˈvɛstər/

investor

投资者
Meaning
a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit
Example
The investor funded the startup with a large sum of money.
投资者用一大笔钱资助了这家初创公司。
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。
B2 verb ɪmˈpoʊz

imposes

强加
Meaning
To establish or apply by authority; to force something unwelcome or unfamiliar to be accepted or put in place.
Example
Pollution imposes harmful effects on the environment.
污染对环境施加了有害的影响。
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 adjective /ˈɪrɪtəbl/

irritable

Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
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。
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 verb /ˌɪntərˈlɒk/

interlock

互锁
Meaning
to fit or connect together securely so that two or more things are joined
Example
The gears interlock to ensure smooth movement of the machine.
齿轮相互啮合，确保机器的平稳运行。
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。
C2 adjective /ɪnˈvɛtərət/

inveterate

根深蒂固
Meaning
having a long-established habit, activity, or interest that is unlikely to change
Example
He is an inveterate reader who spends hours in the library every day.
他是一个根深蒂固的读者，每天在图书馆度过几个小时。
C1 noun /ˈɪŋ.krə.mənt/

Increment

增加
Meaning
an increase or addition, especially one of a series on a fixed scale; a regular increase in salary
Example
He received an annual increment of five percent in his salary this year.
他今年获得了五个百分点的年终增加。
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。
C2 adjective /ˌɪnɪkˈsprɛsəbl/

inexpressible

难以言喻
Meaning
Too strong or extreme to be expressed in words.
Example
She felt inexpressible joy at the news of her success.
她得知自己成功的消息时感到难以言喻的喜悦。
A1 preposition /ɪn ˈfrʌnt əv/

in front of

在……前面
Meaning
positioned before or ahead of something; facing or located at the forward side of a person or object
Example
She stood in front of the building.
她站在建筑物前面。
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。
B2 adjective /ɪˈmætʃʊr/

Immature

不成熟; 未完全发展; 幼稚
Meaning
not fully developed; lacking emotional or intellectual development; childish
Example
His immature behavior during the meeting disappointed everyone.
他在会议中的不成熟行为让大家都很失望。
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。
C2 noun /ˈaɪsinəs/

iciness

冰冷
Meaning
The state of being cold in manner or temperature.
Example
There was a distinct iciness in his voice.
他的声音中有一种明显的冰冷感。
C2 verb /ɪnˈɡreɪʃiˌeɪt/

ingratiate

Meaning
To gain favor or approval by deliberate effort, often in a flattering way.
Example
She tried to ingratiate herself with her boss by complimenting him often.
C2 noun /ˈɪnsələns/

insolence

厚颜无耻
Meaning
rude or disrespectful behavior
Example
The teacher was shocked by the student's insolence.
老师对学生的厚颜无耻感到震惊。
B1 noun /ˈɪnstəns/

instance

实例
Meaning
An example or single occurrence of something.
Example
This is just one instance of his generosity.
这是他慷慨的一个例子。
C2 adjective /ɪnˈkoʊ.ɪt/ or /ɪnˈkoʊ.eɪt/

inchoate

未完成的
Meaning
Just begun and not fully formed; rudimentary.
Example
His inchoate ideas needed more research to be developed.
他的未完成的想法需要更多的研究才能发展。
C1 adjective /ɪmˈpæsəbəl/

impassable

无法通行
Meaning
Impossible to travel along or over.
Example
The road became impassable after the heavy snowfall.
这条路在大雪过后变得无法通行。
B2 verb /ɪmˈprɪzən/

imprison

囚禁
Meaning
to put someone in prison; to confine or restrict someone's freedom
Example
The judge imprisoned the criminal for five years.
法官把罪犯囚禁了五年。
B2 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。
A2 verb /ɪɡˈnɔːr/

ignore

忽视
Meaning
to refuse to take notice of; to disregard intentionally
Example
She decided to ignore the rude comments.
她决定忽视那些粗鲁的评论。
B2 verb /ɪnˈsʌlt/

insult

侮辱
Meaning
to speak or act in a way that hurts someone's feelings or shows disrespect
Example
He felt insulted by her rude comments.
他因她的粗鲁评论而感到被侮辱。
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。
C2 verb /aɪˈtɪnəˌreɪt/

itinerate

旅行
Meaning
To travel from place to place, usually for the purpose of work or preaching.
Example
The missionary itinerated throughout the region to spread the message.
传教士到处旅行传播信息。
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 /ˌɪnkɒntrəˈvɜːtəbl/

incontrovertible

不可否认
Meaning
impossible to deny or dispute; unquestionable
Example
The evidence was incontrovertible and proved his innocence.
证据是不可否认的，并证明了他的清白。
C1 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
C2 adjective /ɪnˈvɪdiəs/

invidious

引起嫉妒的
Meaning
likely to arouse resentment, envy, or anger in others
Example
The manager's invidious remarks created tension among the employees.
经理的嫉妒言论在员工中间造成了紧张气氛。
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。
A2 adjective /ɪl/

Ill

生病的; 不舒服的; 健康状况差
Meaning
sick; unwell; in poor health
Example
He felt ill and decided to stay home from work.
他感到生病，决定从工作中呆在家里。
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 noun /ɪnˈfjuːʒən/

infusion

草药注入
Meaning
the act of introducing something into another; a drink made by steeping leaves or herbs in liquid
Example
She prepared a calming infusion of chamomile tea.
她准备了一杯舒缓的洋甘菊茶注入。
B2 adjective /ˈɪnfɪnɪt/

infinite

无限
Meaning
limitless or endless in space, extent, or number
Example
The universe is often described as infinite.
宇宙常被描述为无限的。
B1 verb ˈɪndɪkeɪts

indicates

表示
Meaning
Point out; show; be a sign or symptom of; suggest as a desirable or necessary course of action.
Example
The rising trend indicates an urgent need for action.
上升的趋势表示迫切需要采取行动。
C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

独创性
Meaning
The quality of being clever, original, and inventive.
Example
His ingenuity led to groundbreaking innovations.
他的独创性导致了开创性的创新。
C2 noun /aɪˈkɒnəklæst/

iconoclast

破坏偶像者
Meaning
A person who attacks or criticizes cherished beliefs, traditions, or institutions.
Example
He was known as an iconoclast who challenged old traditions.
他被认为是一个破坏偶像者，挑战旧传统。
B2 noun /ˌɪntərˈfɪərəns/

interference

干扰
Meaning
the action of interfering with something
Example
The radio signal was disrupted due to interference from nearby electronics.
由于附近电子设备的干扰，无线电信号受到了干扰。
C2 noun /ɪmˈpɒs.tʃər/

Imposture

冒充; 欺诈; 欺骗
Meaning
the practice of deceiving others by pretending to be someone else; fraudulent deception
Example
The elaborate imposture lasted for months before investigators uncovered the truth.
这个精心设计的欺骗持续了几个月，直到调查员揭露了真相。
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 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 /ɪˈledʒ.ə.bəl/

illegible

难以辨认
Meaning
Not clear enough to be read; unreadable.
Example
The doctor’s handwriting was almost illegible.
医生的字迹几乎难以辨认。
C2 adjective /ˌɪnsəˈprɛsəbl/

insuppressible

不可抑制的
Meaning
That cannot be suppressed or restrained.
Example
She had an insuppressible urge to laugh during the ceremony.
她在仪式上有一种不可抑制的笑意。
C1 noun 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。
C2 adjective /ˌɪntərˈniːsaɪn/

internecine

内部冲突
Meaning
Relating to conflict within a group, often causing mutual destruction.
Example
The internecine conflict weakened the organization from within.
内部冲突削弱了组织内部的力量
B1 adjective /ɪmˈpres.ɪv/

Impressive

令人印象深刻的
Meaning
striking; remarkable; having the ability to impress
Example
Her impressive performance earned her a standing ovation.
她出色的表演赢得了全场起立鼓掌。
C2 verb /ˈɪntərˌdɪkt/

interdict

禁止
Meaning
to prohibit or forbid something by authoritative order, often by law or decree
Example
The court moved to interdict the sale of the illegal goods.
法院决定禁止销售非法商品。
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 /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。
A1 noun /aɪˈdiː.ə/

Idea

主意; 概念; 提议
Meaning
a thought or suggestion as to a possible course of action; a concept or mental impression
Example
She had a brilliant idea for solving the company's efficiency problem.
她有一个解决公司效率问题的精彩主意。
C2 noun /ɪnˈfriːkwəns/

infrequence

罕见性
Meaning
The state of occurring rarely or at long intervals.
Example
The infrequence of their meetings made it hard to maintain close ties.
他们会议的罕见性使得保持亲密关系变得困难。
C2 noun /ɪnˈtɒksɪkənt/

intoxicant

醉品
Meaning
a substance, especially alcohol or a drug, that causes intoxication
Example
Alcohol is the most commonly used intoxicant in many cultures.
酒精是许多文化中最常用的醉品。
B1 adjective /ˌɪnɪkˈspɛnsɪv/

Inexpensive

便宜的; 经济实惠的; 负担得起的
Meaning
not costing a lot of money; affordable; budget-friendly
Example
This restaurant offers delicious and inexpensive meals for students.
这家餐厅为学生提供美味且便宜的餐点。
B2 adjective /ɪnˈkluːsɪv/

inclusive

包容的
Meaning
Including all the services, facilities, or items normally expected or required; not excluding any section of society or any party involved.
Example
Inclusive growth benefits all sections of society.
包容性增长惠及社会的所有阶层。
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。
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 /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。
C2 noun /ɪkˈsɔːr.ə/

Ixora

伊克索拉
Meaning
a tropical flowering shrub with clusters of small bright red, orange, or yellow flowers
Example
The bright red ixora bushes lined the pathway to the tropical garden.
亮红色的伊克索拉灌木排成行，沿着通往热带花园的小径。
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 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。
C1 noun /ˌɪmpɔːrˈteɪʃən/

importation

进口
Meaning
The act of bringing goods or services into a country from abroad
Example
The importation of luxury goods is strictly regulated.
奢侈品的进口受到严格监管。
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 /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 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 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 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。
B2 adjective /ɪˈmjuːn/

immune

免疫的
Meaning
protected from disease or from the effects of something
Example
Children who are vaccinated are immune to many diseases.
接种疫苗的孩子对许多疾病免疫。
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。
B2 adjective /ˈaɪsi/

Icy

冰冷的; 极冷的; 敌对的
Meaning
extremely cold; covered with ice; unfriendly or hostile
Example
The icy wind made everyone shiver.
冰冷的风让每个人都颤抖。
C2 adjective /ˌɪnkɔːrˈpɔːriəl/

incorporeal

无形的
Meaning
lacking a physical body; not composed of matter; intangible
Example
Ghosts are often described as incorporeal beings.
鬼魂常被描述为无形的存在。
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。
C2 noun /ˈɪndələns/

indolence

懒惰
Meaning
Avoidance of activity or exertion; laziness.
Example
His indolence kept him from finishing the project on time.
他的懒惰使他无法按时完成项目。
C1 adjective /ɪnˈflæməbəl/

Inflammable

易燃; 可燃
Meaning
easily set on fire; flammable; combustible
Example
The inflammable material caught fire quickly.
易燃材料很快着火了。
B1 noun ɪnˈtel.ɪ.dʒəns

intelligence

智能
Meaning
The ability to learn, understand, and think in a logical way about things
Example
Intelligence is key in AI development.
智能是AI发展的关键。
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。
B2 adjective /ɪˈreɡjələr/

irregular

不规则的
Meaning
not even or consistent in shape, pattern, time, or behavior; not following normal rules
Example
His attendance at work has been irregular this month.
他这个月上班出勤不规则。
C1 noun /aɪˈdiː.ə.lɪ.zəm/

Idealism

理想主义
Meaning
the pursuit of high principles and noble goals; unrealistic pursuit of perfection
Example
His youthful idealism motivated him to join various social justice movements.
他的青春理想主义激励他加入了各种社会公正运动。
C1 verb /ɪnˈfɛst/

infest

感染
Meaning
to overrun in large numbers, especially so as to cause damage or discomfort
Example
The old house was infested with rats.
老房子被老鼠感染。
C2 noun /ˈaɪ.ərn.wʊd/

Ironwood

铁木
Meaning
a hard, dense wood from various trees; also the tree itself that produces small flowers
Example
The ironwood tree blooms with tiny white flowers.
铁木树开着小白花。
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。
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 noun /ɪnˈkɒmpɪtəns/

incompetence

不称职
Meaning
Lack of ability, skill, or effectiveness in doing something.
Example
The project failed due to the manager’s incompetence.
由于经理的不称职，项目失败了。
B2 adjective /ɪnˈtriːɡɪŋ/

intriguing

非常有趣和不寻常；激发好奇心
Meaning
very interesting and unusual; arousing curiosity
Example
The movie has an intriguing plot that keeps the audience hooked.
这部电影有一个引人入胜的情节，吸引着观众。
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。
B2 noun ˈɪnər strɛŋkθ

inner strength

内在力量
Meaning
Mental or spiritual power that helps a person cope with difficulties.
Example
Community service fosters inner strength in individuals.
社区服务促进了个人的内在力量。
B1 verb /ɪnˈstɔːl/

install

安装
Meaning
To place or fix equipment or software so it is ready for use.
Example
He installed the new software on his computer.
他在他的电脑上安装了新软件。
B2 verb aɪˈdɛntɪfaɪd

identified

已识别
Meaning
To recognize or establish who or what someone or something is.
Example
The root causes of the issue need to be identified.
问题的根本原因需要被识别。
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 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。
C2 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

深红色
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
夕阳下天空变成了深红色。
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。
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 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。
B1 verb /ɪnˈvɛnt/

invent

发明
Meaning
to create or design something that has not existed before
Example
Thomas Edison invented the electric bulb.
托马斯·爱迪生发明了电灯泡。
C2 adjective /ˌɪn.trəˈmjʊə.rəl/

intramural

校内
Meaning
Occurring within the walls of a single institution, especially a school or college.
Example
The college organizes intramural sports competitions every semester.
大学每学期组织校内体育比赛。
B1 verb /ˌɪntərˈækt/

interact

互动
Meaning
to communicate or work together with someone or something
Example
Students interact with teachers during class discussions.
学生们在课堂讨论中与老师互动。
B2 verb /ˈɪmɪteɪt/

imitate

模仿
Meaning
to copy the behavior or manner of someone or something
Example
Children often imitate their parents' behavior.
孩子们经常模仿父母的行为。
B1 noun ɪˈnɪʃətɪv

initiative

倡议
Meaning
An act or strategy intended to resolve a difficulty or improve a situation; a fresh approach to something.
Example
NASA's initiative to return humans to the Moon is ambitious.
美国宇航局将人类送上月球的创意是雄心勃勃的。
C1 adjective ɪˈluː.sər.i

illusory

虚幻的
Meaning
Based on illusion; not real although seeming to be.
Example
His sense of security was entirely illusory.
他的安全感完全是虚幻的。
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

过渡期
Meaning
A period between rulers or governments when normal leadership is suspended.
Example
The country faced instability during the interregnum after the king’s death.
在国王去世后的过渡期，该国经历了不稳定。
B2 adjective /ɪˈmædʒ.ɪ.nər.i/

Imaginary

想象的; 虚构的; 不现实的
Meaning
existing only in imagination; not real; fictional
Example
The child had an imaginary friend who she talked to every day.
那个孩子有一个想象的朋友，每天和他说话。
A1 preposition /ɪn/

in

在
Meaning
expressing the situation of being enclosed or surrounded by something
Example
She is in the kitchen preparing dinner.
她在厨房准备晚餐。
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

无法修复的
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
古老手稿的损坏是无法修复的。
C2 verb /ˌɪnkəˈpæsɪteɪt/

incapacitate

使无法运作
Meaning
to deprive someone or something of the ability or strength to function
Example
The severe injury incapacitated the player for the rest of the season.
重伤使球员在赛季剩余的时间内无法参赛。
C2 noun /ɪnˈsaɪzər/

incisor

切牙
Meaning
a narrow-edged tooth at the front of the mouth, adapted for cutting
Example
The dentist noted that his upper left incisor was chipped.
牙医注意到他的上左切牙裂开了。
C1 noun /ˈɪtʃ.i.nəs/

itchiness

痒
Meaning
The quality or condition of feeling an irritating sensation on the skin that causes a desire to scratch.
Example
Eye itchiness often leads to rubbing.
眼睛的痒感常常导致揉搓。
B2 verb ˈɪmplɪment

implement

实施
Meaning
To put a decision or plan into effect; to execute or apply.
Example
Implementing educational policies is essential for progress.
实施教育政策对进步至关重要。
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。
B1 verb ɪnˈkriːsɪŋ

increasing

增加
Meaning
Becoming or making greater in size, amount, intensity, or degree; growing.
Example
Increasing awareness about education is necessary.
提高对教育的意识是必要的。
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。
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。
C2 adjective /ɪnˈsɪpɪd/

insipid

乏味的
Meaning
lacking flavor, interest, or excitement; dull
Example
The soup was insipid and needed more seasoning.
汤无味，需要更多的调料。
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 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。
B2 verb /ɪtʃ/

itch

瘙痒
Meaning
to feel an urge to scratch; to have a restless desire
Example
My skin itches from the mosquito bites.
我的皮肤因蚊子叮咬而发痒。