investor
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英语 BN 孟加拉语 HI 印地语 ES 西班牙语 FR 法语 DE 德语 RU 俄语 ZH 中文 JA 日语
All Vocabulary Cards All Vocabularies
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。
A1 noun /ˈaɪs kriːm/

Ice-cream

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

intermediary

中介
Meaning
A person who acts as a link between people in order to try to bring about an agreement; a mediator.
Example
The diplomat served as an intermediary between the two conflicting nations.
外交官作为两国冲突中的中介起到了作用。
C2 adjective /ˌɪnˌɑːpərˈtuːn/

inopportune

不合时宜的时刻
Meaning
Happening at a bad or inconvenient time.
Example
His call came at the most inopportune moment.
他的电话在最不合时宜的时刻打来。
C2 noun /ˌɪlɪbəˈræləti/

illiberality

不宽容
Meaning
The quality of being illiberal; lack of tolerance or generosity.
Example
The illiberality of the new laws alarmed the citizens.
新法律的不宽容让市民感到警觉。
B2 noun ɪnˌdʌstrɪəlaɪˈzeɪʃən

industrialization

工业化
Meaning
The development of industries in a country or region on a wide scale.
Example
Industrialization changed the global economy dramatically.
工业化显著改变了全球经济。
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。
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。
B2 adjective /ɪnˈkeɪpəbəl/

incapable

无能的
Meaning
lacking the ability, skill, or capacity to do something
Example
He is incapable of understanding complex instructions.
他无法理解复杂的指令。
A2 noun /ˈaɪ.lənd/

Island

岛屿
Meaning
a piece of land completely surrounded by water
Example
We visited a beautiful island during our vacation.
我们在假期期间参观了一个美丽的岛屿。
B1 verb /aɪˈdentɪfaɪ/

identify

识别
Meaning
to recognize; to establish who someone is
Example
Can you identify the suspect?
你能识别嫌疑人吗？
C1 noun /ˈɪntrɪkəsi/

intricacy

复杂性
Meaning
the quality of being very detailed or complicated
Example
The intricacy of the design impressed everyone.
设计的复杂性给每个人留下了深刻印象。
B2 verb /ɪnˈheɪl/

inhale

吸气
Meaning
to breathe in; to draw air into the lungs
Example
Take a deep breath and inhale slowly.
深吸一口气并缓慢地吸入。
C2 adjective /ˌɪlˈneɪ.tʃəd/

ill-natured

性格恶劣
Meaning
Having a bad or unpleasant character; unkind or malicious.
Example
He made an ill-natured remark about his colleague.
他对他的同事做出了恶意的评论。
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。
C2 noun /ˈaɪdlər/

idler

懒汉
Meaning
A person who avoids work or spends time lazily.
Example
He was known as an idler who wasted his days.
他被称为一个懒汉，浪费了他的日子。
B2 noun /ˈɪɡ.nər.əns/

Ignorance

无知
Meaning
lack of knowledge or information; the state of being uninformed about something
Example
His ignorance about basic computer skills made it difficult for him to find a job.
他对基本计算机技能的无知使他很难找到工作。
C1 adjective /ɪmˈpɜːmiəbl/

impermeable

不透水的
Meaning
Not allowing fluid or gas to pass through.
Example
The container is made of impermeable plastic.
这个容器是由不透水的塑料制成的。
A2 adverb /ɪnˈstɛd/

instead

代替
Meaning
As an alternative or substitute.
Example
She didn’t buy the dress; instead, she chose a pair of shoes.
她没有买那件裙子; 反而她选择了一双鞋子。
C2 noun /ˈɪn.dɪ.dʒəns/

indigence

贫困
Meaning
a state of extreme poverty or destitution
Example
The charity was founded to help people living in indigence.
这个慈善组织成立是为了帮助生活在贫困中的人们。
B2 adjective /ɪmˈprɒp.ər/

Improper

不合适的; 错误的; 不适当的
Meaning
inappropriate; incorrect; not suitable
Example
It would be improper to discuss personal matters in a business meeting.
在商务会议上讨论个人事务是不合适的。
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 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
B2 verb /ɪmˈpoʊz/

impose

强加
Meaning
to force someone to accept something; to establish or apply by authority
Example
The government imposed new taxes on luxury goods.
政府对奢侈品征收了新税。
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 /ˌɪnkəmˈbʌstəbl/

incombustible

不燃烧
Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
这种材料是防火的，适合建筑使用。
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 /ɪnˈtɛnʃən/

intension

内涵
Meaning
The internal content of a concept; the set of attributes implied by a word or phrase.
Example
The intension of the word 'dog' includes being a mammal and domesticated.
'狗'这个词的内涵包括是哺乳动物和被驯养。
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 /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 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。
B2 adjective /ˌɪrɪˈzɪstəbəl/

Irresistible

不可抗拒的
Meaning
too attractive and tempting to be resisted; impossible to resist
Example
The chocolate cake was absolutely irresistible.
这块巧克力蛋糕简直让人无法抗拒。
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 /ɪnˈfɪnɪti/

infinity

无限
Meaning
A concept describing something without any limit or end.
Example
The universe seems to stretch into infinity.
宇宙似乎无限延伸。
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。
C2 noun /ˈɪl.i.æd/

iliad

伊利亚特
Meaning
An ancient Greek epic poem attributed to Homer, describing the events of the Trojan War.
Example
Students studied the Iliad to understand Greek mythology and heroism.
学生们学习了《伊利亚特》，以理解希腊神话和英雄主义。
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 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。
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 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 /ɪnˈædɪkwət/

inadequate

不充分
Meaning
Not sufficient or good enough.
Example
The funding was inadequate to complete the project.
资金不足以完成项目。
C1 adjective /ˈɪnsjələr/

insular

狭隘的，岛屿相关的
Meaning
Narrow-minded, isolated, or relating to an island.
Example
The community was criticized for its insular attitudes toward outsiders.
该社区因其对外来者的封闭态度而受到批评。
C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

鱼类学
Meaning
The branch of zoology that deals with fish.
Example
He pursued a degree in ichthyology at the university.
他在大学获得了鱼类学学位。
C2 adjective /ɪnhɑːrˈmoʊniəs/

Inharmonious

不和谐
Meaning
lacking harmony; discordant in sound; not in tune
Example
The inharmonious sounds from the broken piano made everyone cover their ears.
破碎钢琴发出的不和谐声音让每个人都捂住了耳朵。
C2 adjective /ɪmˈplækəbl/

implacable

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

indubitably

无疑
Meaning
Without a doubt; certainly.
Example
She is indubitably the best candidate for the job.
她无疑是这份工作的最佳候选人。
B2 noun /ɪnˈtɛnt/

intent

意图
Meaning
the purpose or reason behind an action; a strong determination to do something
Example
Her intent was to improve the quality of education in the community.
她的意图是提高社区的教育质量。
B1 adverb /ˈɪnstəntli/

instantly

立刻
Meaning
immediately, without any delay
Example
He replied instantly to the message.
他立刻回复了消息。
B2 adjective /ɪnˈtɛns/

intense

强烈
Meaning
Of extreme force, degree, or strength.
Example
She felt intense pain after the accident.
她在事故后感到剧烈的疼痛。
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。
C2 noun /ɪmˈpruː.dəns/

Imprudence

轻率; 粗心; 不小心
Meaning
the quality of being imprudent; lack of care for consequences; recklessness
Example
His financial imprudence led to bankruptcy within just two years.
他的财务不谨慎导致了两年内破产。
C2 noun /ɪnˈvaɪtər/

invitor

邀请者
Meaning
a person who invites someone to an event, meeting, or place
Example
The invitor greeted all the guests warmly at the entrance.
邀请者在入口处热情地欢迎了客人。
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 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。
B2 adjective /ɪˈlɪt.ər.ət/

Illiterate

文盲; 不识字的; 无知的
Meaning
unable to read or write; lacking education
Example
The program aims to help illiterate adults learn to read and write.
该计划旨在帮助文盲成年人学习读写。
B1 noun /ˌɪntərˈækʃən/

interaction

相互作用
Meaning
The process of people or things acting upon or influencing each other.
Example
The teacher encouraged more interaction between students.
老师鼓励学生之间更多的互动。
C2 noun /ˈɪmpjʊdəns/

impudence

无礼
Meaning
Rude and disrespectful behavior.
Example
The student's impudence shocked the entire class.
学生的无礼行为让全班震惊。
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 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。
B1 adjective /ˈɪnər/

inner

内在的
Meaning
Located inside or closer to the center; relating to one’s thoughts or feelings.
Example
She shared her inner thoughts with her best friend.
她与她最好的朋友分享了她的内心想法。
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 /ˌɪnkwɪˈzɪʃən/

inquisition

宗教裁判
Meaning
A prolonged and intense questioning or investigation, often harsh in nature.
Example
The journalist faced an inquisition from the panel about his sources.
记者面对小组对他消息来源的严厉质询。
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。
B2 adjective /ɪnˈtækt/

intact

完整
Meaning
Remaining whole, complete, and undamaged.
Example
Despite the storm, the old house remained intact.
尽管风暴，老房子依然保持完整。
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。
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。
A2 noun /ˈɪlnəs/

illness

疾病
Meaning
A condition of being unwell or suffering from a disease.
Example
She missed school due to a serious illness.
她因为严重的疾病错过了学校。
C2 noun /ɪnˈkɒnstənsi/

inconstancy

不稳定性
Meaning
The quality of changing frequently or being unreliable.
Example
The inconstancy of the weather makes planning difficult.
天气的不稳定性使得规划变得困难。
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 adjective /ɪnˈkɒmpɪtənt/

incompetent

Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
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。
C2 noun /ˌɪn.təˈvɛn.ʃə.nɪ.zəm/

interventionism

干预主义
Meaning
Government policy of active involvement in economic affairs.
Example
The central bank's interventionism helped stabilize inflation.
中央银行的干预主义帮助稳定了通货膨胀。
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。
C2 noun /ɪnˈtɛstəsi/

intestacy

无遗嘱的死亡
Meaning
The condition of dying without having made a valid will.
Example
His estate was divided according to the laws of intestacy.
他的财产根据无遗嘱的法律被分配。
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。
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。
B1 verb /ˈɪndɪkeɪt/

indicate

指示
Meaning
to point out; to show or suggest; to be a sign of
Example
The red light indicates that you should stop.
红灯表示你应该停下来。
B1 adjective /ɪmˈpeɪʃənt/

impatient

不耐烦
Meaning
Not able to wait calmly; restless and eager for something to happen.
Example
She grew impatient while waiting in the long queue.
她在长队中等得不耐烦。
B2 adverb /ɪmˈpɔːtəntli/

importantly

重要地
Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
重要地，报告突出了立即采取行动的必要性。
C1 verb /ɪnˈsaɪt/

incite

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

infect

传染
Meaning
To contaminate with a disease-causing organism.
Example
The virus can infect healthy people quickly.
病毒可以迅速传染健康的人。
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 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
A1 noun /aɪs/

Ice

冰
Meaning
water that has frozen and become solid
Example
The ice in my drink melted quickly in the hot weather.
我饮料中的冰在热天气下很快融化了。
B2 noun ˌɪm.plɪˈkeɪ.ʃən

implication

暗示
Meaning
A conclusion that can be drawn from something although it is not explicitly stated; a likely consequence.
Example
The implication of climate change is severe.
气候变化的暗示意义是严重的。
C2 adjective /ɪˈnjʊərd/

inured

习惯于
Meaning
Accustomed to something, especially something unpleasant.
Example
After years of hardship, she was inured to suffering.
经过多年的困苦，她已经习惯于痛苦了。
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。
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。
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 /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 /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 verb /ɪmˈpiːtʃ/

impeach

Meaning
To charge a public official with misconduct while in office.
Example
The parliament voted to impeach the president.
A2 noun /ˈɪndʒəri/

injury

伤害
Meaning
Harm or damage to a person’s body caused by an accident or attack.
Example
He suffered a serious injury during the football match.
他在足球比赛中受了重伤。
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 /ɪnˈhɪbɪtɪd/

inhibited

抑制的
Meaning
Unable to act in a relaxed and natural way, especially due to self-consciousness or restraint.
Example
He was too inhibited to express his true feelings.
他太抑制自己，无法表达真实的感受。
C2 verb /ˈɪmprɛɡneɪt/

impregnate

使怀孕 / 浸透
Meaning
To make pregnant; to fill or saturate with something.
Example
The scientist used a method to impregnate the material with resin.
科学家使用一种方法将材料用树脂进行浸透。
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 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。
B2 verb /ɪˈnɪʃieɪt/

initiate

启动
Meaning
to begin or start; to introduce someone to a new activity
Example
The company will initiate a new training program.
公司将启动一个新的培训项目。
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。
B1 adjective ˈɪnəveɪtɪv

innovative

创新的
Meaning
Featuring new methods; advanced and original
Example
Innovative strategies are required to combat pollution.
创新的战略是解决污染问题的关键。
C2 adjective /ɪˈrædɪkəbəl/

irradicable

不可根除的
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
母亲对孩子的爱是不可根除的。
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。
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 /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。
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 adjective /ɪnˈdʒɛnjuəs/

ingenuous

天真
Meaning
Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.
Example
Her ingenuous smile revealed her genuine kindness.
她天真的笑容揭示了她真实的善良。
A2 verb /ˌɪntrəˈduːs/

introduce

介绍
Meaning
to present someone; to bring in for the first time
Example
Let me introduce you to my friend.
让我介绍你给我的朋友。
C1 adjective /ˌɪnədˈmɪsəbl̩/

inadmissible

不可接受
Meaning
Not allowed, especially as evidence in a court of law.
Example
The judge ruled the evidence inadmissible.
法官宣布证据不可接受。
B1 noun ˌɪn.stɪˈtjuː.ʃən

institution

机构
Meaning
An organization founded and united for a specific purpose; an established law, practice, or custom.
Example
Institutions play a crucial role in governance.
机构在治理中起着至关重要的作用。
B2 adjective ɪnˈdɪdʒɪnəs

indigenous

本土的
Meaning
Originating or occurring naturally in a particular place; native.
Example
Indigenous plants are well adapted to the local environment.
本土植物很好地适应了当地环境。
B2 adjective ˌɪnstrəˈmɛntl

instrumental

重要的
Meaning
Serving as a crucial means, agent, or tool; having a part in bringing about a result.
Example
Children can be instrumental in building a better society.
孩子们可以在建设更好的社会中发挥重要作用。
C2 verb /ˌɪmpɔːrˈtuːnd/

importuned

不停地请求
Meaning
asked someone persistently and pressingly for something
Example
She importuned her boss for a raise until he finally gave in.
她不停地请求老板加薪，直到他最终答应。
B1 adjective /ɪmˈpruːvd/

improved

改进的
Meaning
made better or enhanced in quality or condition
Example
Her health has significantly improved since last month.
她的健康自上个月以来显著改善。
C2 adjective /ɪnˈklɛmɛnt/

inclement

恶劣天气
Meaning
unpleasantly cold, wet, or stormy (usually weather)
Example
The match was canceled due to inclement weather.
比赛因恶劣天气被取消了。
B2 noun /ˌɪmɪˈɡreɪʃən/

immigration

移民
Meaning
the action of coming to live permanently in a foreign country
Example
Immigration policies vary from country to country.
移民政策因国家而异。
C1 verb /ˈɪmprəvaɪz/

improvise

Meaning
To create or perform something spontaneously without preparation.
Example
The actor had to improvise his lines when he forgot the script.
C2 adjective /ɪnˈsuːsiənt/

insouciant

无忧无虑
Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
他无忧无虑地耸了耸肩，然后走开了。
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。