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A1 verb /flaɪ/

fly

飞行
Meaning
to move through the air using wings or in an aircraft
Example
Birds fly south for the winter.
鸟类冬天飞往南方。
B1 noun /frʌˈstreɪʃən/

frustration

挫折
Meaning
The feeling of being upset or annoyed due to inability to achieve something.
Example
He felt deep frustration when his plans failed.
当他的计划失败时，他感到深深的挫折。
C1 adjective /ˈfruːt.ləs/

Fruitless

徒劳的; 无用的; 无效的;
Meaning
unsuccessful; futile; pointless;
Example
After hours of searching, their efforts proved fruitless.
经过数小时的搜索，他们的努力证明是徒劳的。
C1 noun /ˈfɪʃˌmʌŋ.ɡər/

fishmonger

卖鱼人
Meaning
a person or store that sells fish
Example
I bought fresh salmon from the local fishmonger.
我从当地的卖鱼人那里买了新鲜的三文鱼。
C1 adjective /ˈfiːzəbl/

feasible

可行的
Meaning
possible to do easily or conveniently; practical and workable
Example
It is feasible to complete the project within two months.
在两个月内完成这个项目是可行的。
A2 adjective /ˈfɔːrən/ or /ˈfɑːrən/

foreign

外国的
Meaning
Belonging to or coming from another country.
Example
She loves studying foreign languages.
她喜欢学习外国语言。
B2 noun /ˈfaʊn.tən/

Fountain

喷泉
Meaning
a natural spring of water; an artificial structure from which water flows
Example
The fountain in the park attracts many visitors.
公园里的喷泉吸引了许多游客。
B1 adjective /fɜːrm/

Firm

坚固的; 稳定的; 强大的; 不屈服于压力的
Meaning
solid; stable; strong; not yielding to pressure
Example
She has a firm grip on the rope.
她紧握着绳子。
C1 noun /ˈfren.zi/

Frenzy

狂热
Meaning
a state or period of uncontrolled excitement or wild behavior; intense activity
Example
The announcement of the sale created a shopping frenzy at the mall.
销售公告在商场引发了一场购物狂潮。
C2 adjective /ˈfjuːzəbl/

fusible

可熔化的
Meaning
Capable of being melted or fused.
Example
The engineer used a fusible alloy in the experiment.
工程师在实验中使用了可熔化的合金。
B2 noun /fluːt/

Flute

长笛
Meaning
a musical wind instrument with holes along its length that is played by blowing across a hole at one end
Example
He played a sweet melody on his flute.
他在他的长笛上演奏了一首甜美的旋律。
B2 noun /ˈfjuːʒən/

fusion

融合
Meaning
the process or result of joining two or more things together to form a single entity
Example
The restaurant offers a unique fusion of Asian and European cuisines.
餐厅提供独特的亚洲和欧洲美食融合。
C1 adjective ˈfjuː.taɪl

futile

徒劳的
Meaning
Incapable of producing any useful result; pointless.
Example
His attempts to change the situation were futile.
他改变局势的努力是徒劳的。
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

施肥
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
有机施肥有助于改善土壤健康。
C1 adjective /ˈfiːlaɪn/

feline

猫的特征
Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
她的动作优雅，几乎像猫一样。
A2 adjective /fænˈtæstɪk/

Fantastic

极好的; 奇妙的; 卓越的
Meaning
extremely good; wonderful; excellent
Example
The movie was absolutely fantastic!
这部电影绝对是精彩的！
C2 noun /ˈfɔːrˌnɑːlɪdʒ/

foreknowledge

预知
Meaning
Awareness of something before it happens or exists.
Example
The prophet claimed to have foreknowledge of the event.
先知声称他预知了这个事件。
C2 verb /ˈfrɪzəl/

frizzle

将食物炸至变脆并卷曲
Meaning
to fry something until it becomes crisp and curled, or to make a sizzling noise
Example
The bacon began to frizzle in the pan.
培根在锅中开始发出滋滋声。
B2 noun ˈflaɪ.ɪŋ kɑːrz

flying cars

飞行汽车
Meaning
Vehicles that can travel both on roads and in the air.
Example
Flying cars could soon solve urban traffic congestion.
飞行汽车很快就能解决城市交通拥堵问题。
A2 adjective, adverb /ˈfæstər/

faster

更快
Meaning
moving or able to move quickly; more quickly than usual
Example
This car is faster than the old one.
这辆车比老车更快。
C1 noun /ˈfræk.tʃər/

Fracture

骨折; 骨裂
Meaning
the cracking or breaking of a hard object or material; a break in a bone
Example
The doctor confirmed that he had a hairline fracture in his wrist.
医生确认他在手腕上有一条细小的骨折。
C1 noun /fruˈɪʃən/

fruition

实现
Meaning
The realization or fulfillment of a plan, project, or desire.
Example
Her dream of becoming a doctor finally came to fruition.
她成为医生的梦想终于实现了。
C2 adjective /ˈfrɒθi/

frothy

泡沫丰富
Meaning
Full of or covered with small bubbles; light and insubstantial.
Example
She ordered a cup of frothy cappuccino.
她点了一杯泡沫丰富的卡布奇诺。
C1 noun /ˈfɔɪeɪr/

foyer

前厅
Meaning
An entrance hall or lobby in a building.
Example
The guests waited in the hotel foyer before checking in.
客人在酒店大厅等候办理入住手续。
B2 verb, adjective /ˈfɒstər/

foster

培养
Meaning
to encourage the development of something; to raise a child that is not one's own
Example
The program aims to foster creativity in young students.
该计划旨在促进年轻学生的创造力。
A1 noun /ˈfæməli/

family

家庭
Meaning
A group consisting of parents and their children, or all the descendants of a common ancestor.
Example
She spends most of her weekends with her family.
她把大部分周末时间都和家人一起度过。
A1 noun /flɔːr/

floor

地板
Meaning
the lower surface of a room, on which one may walk
Example
The floor was covered with a soft carpet.
地板上铺着一块柔软的地毯。
C2 adjective /ˈfɛkləs/

feckless

无能的, 不负责任的
Meaning
lacking initiative or strength of character; irresponsible
Example
His feckless attitude at work caused several missed deadlines.
他在工作中的无能态度导致了多个错过的最后期限。
A2 noun /ˈfrɛndʃɪp/

friendship

友谊
Meaning
A close and trusting relationship between two or more people.
Example
Their friendship has lasted since childhood.
他们的友谊从小就开始了。
C1 adjective ˈfæʃ.ɪst

fascist

法西斯
Meaning
Relating to or characteristic of fascism; extremely authoritarian.
Example
Fascist governance undermines freedom.
法西斯统治破坏自由。
C1 verb /flɑp/

flop

失败
Meaning
to fall or move heavily and clumsily; to fail completely
Example
The new movie flopped at the box office.
新电影在票房上失败了。
C2 adjective /ˈfæl.oʊ/

fallow

休耕地
Meaning
Describing land that is left unplanted for a period to restore its fertility, allowing soil to recover nutrients and break pest and disease cycles.
Example
Farmers leave their fields fallow to restore soil fertility.
农民将土地休耕，以恢复土壤肥力。
B1 verb /fərˈbɪd/

forbid

禁止
Meaning
to order someone not to do something
Example
The school forbids smoking on campus.
学校禁止在校园内吸烟。
C1 verb /fɔːrˈʃædoʊ/

foreshadow

预示
Meaning
To indicate or suggest something that will happen in the future
Example
Dark clouds foreshadowed an approaching storm.
乌云预示着即将来临的暴风雨。
B1 noun /feɪθ/

Faith

信念; 信任; 宗教信仰;
Meaning
complete trust or confidence in someone or something; strong belief in religion
Example
She had unwavering faith in her team's ability to succeed.
她对她的团队成功的能力有着坚定不移的信念。
B2 noun /ˈfriː.kwən.si/

Frequency

频率
Meaning
the rate at which something occurs or is repeated over a particular period of time
Example
The frequency of earthquakes in this region has increased dramatically over the past decade.
这个地区的地震频率在过去十年中急剧增加。
C1 noun /ˈfjʊərɔːr/

furor

骚动
Meaning
An outbreak of public anger or excitement.
Example
The politician's remarks created a furor in the media.
政治家的言论在媒体上引发了一场轰动。
B1 verb /ˈfraɪtən/

frighten

吓唬
Meaning
to cause fear or alarm in someone
Example
The loud noise frightened the child.
巨大的噪音吓到了孩子。
C1 adverb /ˈfɜː.vənt.li/

Fervently

热情地; 激情地;
Meaning
with passionate intensity; ardently; with great emotion or enthusiasm
Example
She fervently hoped that her dreams would come true.
她热情地希望她的梦想能成真。
B2 verb /ˈfɜːrnɪʃ/

furnish

布置, 提供
Meaning
to provide or supply with furniture or equipment
Example
They furnished the new house with modern furniture.
他们用现代家具布置了新房。
C1 verb /fɔːrˈtɛl/

foretell

预言
Meaning
to predict or announce something before it happens
Example
The old man claimed he could foretell the future.
那位老人声称他能够预言未来。
C1 noun /foʊ/

foe

敌人
Meaning
an enemy or opponent
Example
The knight fought bravely against his foe.
骑士勇敢地与他的敌人作战。
B2 noun /ˈfleɪvər/

flavor

味道
Meaning
The distinctive taste of a food or drink.
Example
This ice cream has a delicious mango flavor.
这款冰淇淋有美味的芒果味。
B1 adjective /feɪld/

failed

失败
Meaning
not successful in achieving a desired result
Example
The project failed to meet the expectations.
项目未能达到预期。
C1 adjective /ˈfænsiːd/

fancied

想象的, 渴望的
Meaning
imagined, desired, or believed without evidence
Example
He is a fancied suitor in the eyes of the young lady.
他是年轻女士眼中的一位想象中的追求者。
C2 verb /ˈfɛtər/

fetter

束缚，限制
Meaning
to restrain or restrict someone’s freedom
Example
The strict rules fettered the creativity of the students.
严格的规则限制了学生们的创造力。
C1 verb /ˈflaʊndər/

flounder

挣扎
Meaning
To struggle or stagger clumsily; to experience difficulty or confusion.
Example
He floundered in the interview when asked difficult questions.
当被问到困难的问题时，他在面试中挣扎。
C2 noun /fækˈtoʊtəm/

factotum

全能工人
Meaning
an employee who does many different types of work; a general servant
Example
He worked as a factotum, handling both clerical and maintenance duties.
他作为一个全能工人工作，处理行政和维护任务。
C1 adjective /fərˈlɔːrn/

forlorn

孤独的, 绝望的
Meaning
extremely sad, lonely, or abandoned
Example
The abandoned puppy looked so forlorn in the rain.
被遗弃的小狗在雨中看起来如此悲伤。
B2 noun /ˈfleɪ.vər/

Flavour

风味
Meaning
the distinctive taste of a food or drink; a particular quality or atmosphere
Example
The soup had a rich flavour of herbs and spices from the garden.
汤里有来自花园的丰富香草和香料味。
C1 noun /ˈfiːtəs/

fetus

胎儿
Meaning
an unborn or unhatched offspring in the womb or egg
Example
The doctor explained the development of the fetus during pregnancy.
医生解释了胎儿在怀孕期间的发展。
B2 adverb /ˈfɔːrmərli/

Formerly

以前; 从前
Meaning
in the past; previously; at an earlier time
Example
The building was formerly a school but is now a community center.
这座建筑以前是学校，但现在是一个社区中心。
C2 noun /fləˈtɪlə/

flotilla

小型舰队
Meaning
A small fleet of ships or boats operating together.
Example
A flotilla of fishing boats left the harbor at dawn.
一支渔船的舰队在黎明时分离开港口。
C1 verb /fɔːˈbɛər/

forbear

克制
Meaning
To refrain from doing something; to show patience or self-control.
Example
She forbore from commenting on his mistake.
她克制了对他错误的评论。
C2 verb /frɪsk/

frisk

搜查
Meaning
To search a person by patting their clothing to check for concealed items.
Example
The security guard frisked the man at the entrance.
安保人员在入口处搜查了那名男子。
A1 adjective /fʊl/

full

满
Meaning
Containing as much or as many as possible; complete.
Example
The glass is full of water.
杯子里满是水。
C2 noun /ˈfriːˌbuːtər/

freebooter

海盗
Meaning
A pirate or plunderer who roams freely in search of wealth.
Example
The freebooter raided the merchant ships along the coast.
海盗袭击了沿海的商船。
C2 adjective/noun /fɪˈduː.ʃi.er.i/

fiduciary

信托的
Meaning
Involving trust, especially with regard to the relationship between a trustee and a beneficiary.
Example
Banks have fiduciary duties towards their clients.
银行对客户有信托责任。
C2 adjective /ˈfrɪski/

Frisky

活泼的; 精力充沛的; 爱玩的; 淘气的
Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
那只活泼的小狗在花园里欢快地奔跑。
C1 adjective fæsˈtɪd.i.əs

fastidious

挑剔的，讲究细节的
Meaning
Very attentive to and concerned about accuracy and detail.
Example
She is fastidious about maintaining cleanliness.
她在保持清洁方面非常讲究。
B2 adverb /ˈflu:əntli/

Fluently

流利地; 顺畅地
Meaning
in a smooth, effortless, and articulate manner; with ease and skill
Example
She speaks French fluently.
她流利地讲法语。
C1 noun /ˈflɔː.rə/

flora

在特定地区或栖息地中发现的植物生命
Meaning
The plant life found in a particular region or habitat.
Example
The Amazon rainforest is home to a vast flora diversity.
亚马逊雨林是丰富的植物群多样性的家园。
C1 verb /fɔrˈstɔl/

forestall

提前预防
Meaning
to prevent by acting in advance; to anticipate and counter
Example
They forestalled the crisis by taking immediate action.
他们通过立即行动避免了危机。
C1 adjective /ˈfrɪvələs/

frivolous

轻浮
Meaning
Not having any serious purpose or value; silly or unimportant.
Example
She dismissed the frivolous complaint quickly.
她迅速驳回了这个轻浮的投诉。
A2 noun /frʌnt/

front

前面
Meaning
the forward-facing part of something
Example
The house has a garden in front.
房子前面有一个花园。
B2 noun /ˈfjuː.nər.əl/

Funeral

葬礼
Meaning
a ceremony typically held shortly after a person's death, usually including burial or cremation
Example
Hundreds of people attended the funeral to pay their respects to the beloved teacher.
成千上万的人参加了葬礼，向亲爱的老师致敬。
C2 adjective /ˈfiːbəlˌmaɪndɪd/

feebleminded

愚蠢或心智薄弱
Meaning
lacking intelligence or mental capacity; foolish or weak-minded
Example
The feebleminded man struggled to understand basic instructions.
那个心智薄弱的人很难理解基本的指示。
C2 verb /fɔːrˈdʒʌdʒ/

forejudge

预先判断
Meaning
To judge beforehand without adequate information.
Example
It is unfair to forejudge someone without knowing the facts.
在没有了解事实的情况下对某人做出判断是不公平的。
A2 adverb /fɔːrˈɛvər/

forever

永远
Meaning
For all future time; for always.
Example
She promised to love him forever.
她承诺永远爱他。
C2 verb /fɪltʃ/

filch

偷
Meaning
to steal something in a sneaky or petty way
Example
He tried to filch a candy bar from the shop.
他试图从商店偷一块糖果。
C2 adverb /ˈfɔːrbi/

forby

此外
Meaning
In addition; besides (archaic Scottish/English word).
Example
He is kind and generous, and wise forby.
他是仁慈和慷慨的，并且此外还是智慧的。
A2 noun /ˈfɪt.nəs/

fitness

身体健康
Meaning
The condition of being physically fit and healthy, or the quality of being suitable to fulfill a particular role or task.
Example
Fitness tests ensure vehicle safety.
身体健康测试确保车辆安全。
C1 adjective /ˈfaɪ.naɪt/

Finite

有限的; 有边界的
Meaning
limited; having bounds or limits; not infinite
Example
Earth has finite natural resources.
地球有有限的自然资源。
C2 adjective /fəˈsiːʃəs/

facetious

讽刺的
Meaning
Treating serious issues with deliberately inappropriate humor
Example
He was being facetious when he said he wanted to live on the moon.
他说他想住在月球上时，他是在开玩笑。
A2 noun /ˈfaɪəˌwɜːk/

firework

烟花
Meaning
a device that explodes or creates a display of lights and sounds, often used in celebrations
Example
The fireworks lit up the sky during the New Year's Eve celebration.
烟花在新年夜庆祝活动中点亮了天空。
B2 adjective, noun /ˈfeɪʃəl/

facial

面部护理
Meaning
Relating to the face; a beauty treatment for the face
Example
She booked a facial at the spa.
她在水疗中心预订了一个面部护理。
A2 noun /ˈfɪŋ.ɡər/

Finger

手指
Meaning
any of the four long thin parts of the hand (or five, if the thumb is included)
Example
She pointed with her finger to show the direction to the museum.
她用手指指向博物馆的方向。
B2 noun /foʊm/

Foam

泡沫
Meaning
a mass of small bubbles formed on or in liquid; frothy white mass
Example
The waves crashed against the rocks, creating white foam on the shore.
波浪撞击岩石，形成了岸边的白色泡沫。
A1 verb /ˈfɪnɪʃ/

finish

完成
Meaning
to complete or bring to an end; to reach the final point
Example
She finished her homework before dinner.
她在晚餐前完成了作业。
C2 noun /feɪnt/

feint

假动作, 伪装动作
Meaning
a deceptive or pretended movement, especially in fighting or sports
Example
The boxer made a feint to the left before striking to the right.
拳击手在打右拳之前做了一个左侧的假动作。
C1 noun /frɪndʒ/

fringe

装饰边缘 / 边界
Meaning
A decorative border of threads; the outer edge or margin of something.
Example
The festival had a fringe of small independent performances.
节日有一条小型独立表演的边缘。
A2 adjective /ˈfraɪtənd/

frightened

害怕的
Meaning
feeling fear or anxiety; scared
Example
The child was frightened by the loud noise.
孩子被巨大的噪音吓到了。
B1 noun /flæʃ/

Flash

闪光; 闪烁
Meaning
a sudden brief burst of bright light; a very brief moment
Example
There was a bright flash of lightning followed by thunder.
有一道明亮的闪电，接着是雷声。
B1 adverb /ˈfɔːtʃənətli/

fortunately

幸运地
Meaning
by good luck; luckily
Example
Fortunately, no one was injured in the accident.
幸运地，事故中没有人受伤。
B2 noun /fɪst/

Fist

拳头; 拳击
Meaning
a person's hand when the fingers are bent in toward the palm and held there tightly
Example
He raised his fist in victory after winning the championship match.
他在赢得冠军比赛后举起了拳头。
A1 verb /fɔːl/

fall

掉落
Meaning
to drop down from a higher place; to decrease; to happen or occur
Example
The leaves fall from the trees in autumn.
秋天，树叶从树上掉下来。
C1 adjective/noun /fəˈrɛns.ɪk/

forensic

应用于刑事或法律事务的科学分析
Meaning
Scientific analysis applied to criminal or legal matters
Example
Forensic experts analyze cybercrimes using advanced tools.
法医专家使用先进的工具分析网络犯罪。
C2 noun /ˈflæt.ər.ər/

Flatterer

奉承者
Meaning
a person who lavishes praise, often insincerely and in order to gain advantage
Example
The king was surrounded by flatterers who only told him what he wanted to hear.
国王被奉承者围绕，他们只告诉他他想听的话。
B2 adverb /ˈfɔ:rmoast/

Foremost

首先; 最重要的
Meaning
most importantly; above all; in the first place
Example
First and foremost, we need to ensure safety.
首先，我们需要确保安全。
C1 adjective /ˈflaʊəri/

flowery

花哨的 / 装饰的
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
她写了一封充满诗意的花哨信。
C1 adjective /ˈflæɡɪŋ/

flagging

变得疲惫、虚弱或失去热情
Meaning
becoming tired, weaker, or less enthusiastic
Example
After hours of work, his energy was flagging.
经过数小时的工作，他的精力正在减退。
A2 adjective /fəˈmɪl.jər/

Familiar

熟悉的; 了解的; 非正式且友好的
Meaning
well-known; easily recognized; having knowledge of; informal and friendly
Example
This song sounds familiar to me.
这首歌听起来对我很熟悉。
C1 noun /fɪkˈseɪ.ʃən/

fixation

固执的兴趣或对某事或某人的执念
Meaning
An obsessive interest in or feeling about someone or something.
Example
His fixation on perfectionism delayed project completion.
他对完美主义的固执导致项目完成的延迟。
B2 noun /fɜːr/

Fur

毛发
Meaning
thick hair covering the body of animals
Example
The cat's fur was soft and warm to touch.
猫的毛发触感柔软而温暖。
A1 noun /ˈfraɪ.deɪ/

friday

星期五
Meaning
the day of the week following Thursday and preceding Saturday
Example
We have a team meeting every Friday afternoon.
我们每个星期五下午都有团队会议。
B1 noun, verb /ˈfaɪ.næns/ or /fəˈnæns/

finance

金融
Meaning
the management of money and investments, or to provide funds for something
Example
The company secured finance from a major bank.
公司从一家大银行获得了融资。
C1 noun /ˈfæk.ʃən/

Faction

派系
Meaning
a small organized dissenting group within a larger one
Example
Different factions within the party disagreed about the new policy.
党内的不同派系对新政策存在分歧。
C1 adjective /ˌfɑːrˈfetʃt/

farfetched

不太可能或不太真实
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late sounded farfetched.
他解释迟到的理由听起来不可信。
B2 verb /fʊlˈfɪl/

fulfill

实现
Meaning
to complete or accomplish something, especially a task or promise
Example
He worked hard to fulfill his dreams.
他努力工作以实现自己的梦想。
B2 verb /fjuːz/

fuse

熔合
Meaning
To join or blend two or more things together into one.
Example
The two metals fused under high heat.
这两种金属在高温下融合。
B2 noun /ˈfluː.ən.si/

fluency

流利
Meaning
The ability to speak or write a language smoothly and effortlessly.
Example
She speaks English with remarkable fluency.
她流利地说英语，令人惊讶。
B1 noun /ˈfʌŋkʃən/

function

功能
Meaning
An activity or purpose natural to or intended for a person or thing.
Example
The main function of the heart is to pump blood.
心脏的主要功能是泵送血液。
C1 noun /ˌfɜːrmənˈteɪʃən/

fermentation

发酵，酵母或细菌的化学变化
Meaning
a chemical process by which substances like sugar are converted into alcohol or acids using microorganisms
Example
The fermentation of grapes produces wine.
葡萄的发酵产生葡萄酒。
A2 adjective /ˈfaɪ.nəl/

Final

最后的; 决定性的; 终极的
Meaning
last; concluding; decisive; ultimate
Example
This is the final exam of the semester.
这是本学期的最终考试。
B1 adjective /ˈfæsɪneɪtɪŋ/

Fascinating

迷人
Meaning
extremely interesting; captivating; enchanting
Example
The documentary about ocean life was fascinating.
关于海洋生命的纪录片令人着迷。
B2 noun, verb /ˈfaɪlɪŋ/

filing

提交文件; 整理文件
Meaning
the act of submitting documents; the process of organizing papers
Example
The lawyer handled the filing of all court documents.
律师处理了所有法院文件的提交。
C2 adjective /ˈfiːtɪd/

foetid

恶臭的
Meaning
having an offensive, unpleasant smell
Example
The foetid smell from the garbage made it hard to breathe.
垃圾散发出的恶臭使得呼吸变得困难。
C2 noun /ˌfrɪdʒɪˈdɛːriəm/

frigidarium

冷水池
Meaning
a large cold pool in ancient Roman baths used for cooling off after hot baths
Example
The ruins of the Roman frigidarium are still visible today.
罗马的冷水池遗址今天仍可见。
A1 adjective/verb/adverb /friː/

free

自由
Meaning
Not under the control or in the power of another; able to act or be done as one wishes.
Example
The children are free to play outside.
孩子们可以自由地在外面玩。
C2 noun /friːz/

frieze

浮雕带
Meaning
a decorative horizontal band, often sculpted or painted, usually on a wall near the ceiling
Example
The frieze above the entrance depicts scenes from ancient mythology.
入口上方的浮雕带描绘了古代神话中的场景。
B2 noun /ˈfrɪkʃən/

friction

摩擦
Meaning
the resistance that one surface or object encounters when moving over another; conflict or tension between people or groups
Example
There was friction between the two departments over resource allocation.
在资源分配问题上，两个部门之间有摩擦。
C2 noun /fiːf/

fief

在封建制度下拥有的土地；一个控制区域或领域
Meaning
an estate of land held under the feudal system; a domain or area of control
Example
The knight was granted a fief by the lord for his service.
骑士因其服务而获得了领主授予的封地。
B1 noun /ˈfeɪ.ljər/

Failure

失败
Meaning
lack of success; an unsuccessful person, enterprise, or thing
Example
The project's failure was due to poor planning and communication.
项目的失败是由于计划和沟通不良。
B1 noun /foʊk/

folk

人们
Meaning
people in general, often referring to a group or community
Example
Country folk often live a simple life.
乡村人通常过着简单的生活。
B2 noun /ˌfiː.ɑːnˈseɪ/

Fiancee

未婚妻
Meaning
a woman who is engaged to be married
Example
John bought a beautiful engagement ring for his fiancee.
约翰为他的未婚妻买了一枚漂亮的订婚戒指。
B2 noun /ˈfreɪ.ɡrəns/

Fragrance

香气; 香水
Meaning
a pleasant, sweet smell; a perfume or cologne
Example
The fragrance of jasmine flowers filled the entire garden in the evening.
夜晚，茉莉花的香气弥漫整个花园。
A2 noun /fɪlm ˈæktər/

film actor

电影演员
Meaning
A person who performs roles in movies or films.
Example
The film actor received widespread acclaim for his performance.
这位电影演员因其出色的表演而获得广泛赞誉。
C1 adjective /frɔːt/

fraught

充满
Meaning
Filled with or likely to result in something undesirable.
Example
The negotiations were fraught with tension and uncertainty.
谈判充满了紧张和不确定性。
A1 number /ˌfɪfˈtiːn/

fifteen

十五
Meaning
the number 15
Example
There are fifteen students in the class.
班里有十五个学生。
B2 verb /fɔːrdʒ/

forge

锻造，伪造
Meaning
to create or shape something, often with effort or skill; also to counterfeit or fake something
Example
The blacksmith forged a strong sword from the iron.
铁匠从铁中锻造出一把坚固的剑。
C1 noun /fiˈæs.koʊ/

fiasco

彻底失败
Meaning
a complete failure, especially a ludicrous or humiliating one
Example
The event turned into a complete fiasco due to poor planning.
由于糟糕的规划，活动变成了彻底的失败。