flutter
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C1 verb /ˈflʌtər/

flutter

拍动 / 颤动
Meaning
to move or flap quickly and lightly; to beat or wave with small rapid motions
Example
The butterfly began to flutter its wings in the sunlight.
蝴蝶开始在阳光下扑动它的翅膀。
C1 verb /ˈfʌmbəl/

fumble

搞乱
Meaning
to handle something clumsily or to make mistakes while doing something
Example
He fumbled with the keys and dropped them on the floor.
他搞乱了钥匙，把它们掉在地板上。
B2 noun fɪkst ˈɪnkʌm

fixed income

固定收入
Meaning
Investment that provides a return in the form of fixed periodic payments.
Example
Fixed income investments provide reliable returns.
固定收益投资提供可靠的回报。
B2 noun /ˈfrɛʃnəs/

freshness

新鲜感
Meaning
The quality of being new, clean, and full of energy.
Example
The freshness of the morning air made everyone feel alive.
早晨的清新空气让每个人都感觉活力十足。
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

加强
Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
他们加固了城市的墙壁，以防止入侵。
B2 verb /feɪnt/

faint

昏厥
Meaning
to lose consciousness for a short time because of a temporary lack of oxygen to the brain
Example
He felt dizzy and fainted in the heat.
他感到头晕，并因高温而昏倒。
C1 noun ˌfræɡ.mənˈteɪ.ʃən

fragmentation

碎片化
Meaning
The process or state of breaking or being broken into fragments.
Example
Habitat fragmentation threatens many species.
栖息地的碎片化威胁着许多物种。
C2 noun /ˈfrɛs.koʊ/

fresco

壁画
Meaning
A painting done rapidly in watercolor on wet plaster so that the colors penetrate the surface
Example
The church walls were decorated with beautiful frescoes.
教堂的墙壁装饰着美丽的壁画。
C1 adjective /ˈfɔːrmətɪv/

formative

形成性的
Meaning
Having a lasting influence on a person's development or character.
Example
Childhood is often described as a formative stage in life.
童年常被描述为人生中的一个形成性阶段。
C2 noun /ˈfɔːrʃɔːr/

foreshore

海滩
Meaning
The part of the shore between the high and low tide marks
Example
Children were playing on the foreshore, collecting shells.
孩子们在海岸上玩耍，捡贝壳。
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。
B2 noun /ˈfɔːrmjələ/

formula

公式
Meaning
a fixed method for doing something; a mathematical or chemical rule expressed in symbols
Example
The scientist discovered a new formula for the medicine.
科学家发现了一种新的药物公式。
C1 noun fluˈɪd.ɪ.ti

fluidity

流动性
Meaning
The ability of a substance to flow easily; smooth and graceful movement or style.
Example
The fluidity of the dancer's movements was mesmerizing.
舞者动作的流动性令人着迷。
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。
B1 noun /ˈfɪkʃən/

fiction

虚构
Meaning
Literature created from the imagination, not presented as fact.
Example
She enjoys reading science fiction novels.
她喜欢阅读科幻小说。
A1 noun /fʊt/

Foot

脚
Meaning
the lower extremity of the leg that is in direct contact with the ground in standing or walking
Example
She hurt her foot while running.
她在跑步时扭伤了脚。
C2 adjective /ˈfrəʊərd/

froward

固执的
Meaning
Difficult to deal with; contrary and disobedient.
Example
The teacher found the froward child hard to manage.
老师发现固执的孩子很难管理。
A1 adjective /fɜːrst/

first

第一
Meaning
coming before all others in time, order, or importance
Example
She was the first to arrive at the meeting.
她是第一个到达会议的人。
B2 noun /fleɪm/

Flame

火焰
Meaning
a hot glowing body of ignited gas that is generated by something on fire
Example
The candle flame flickered gently in the evening breeze.
蜡烛的火焰在晚风中微微闪烁。
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 /ˈfæbrɪkeɪt/

fabricate

编造
Meaning
to invent or concoct something, often with the intent to deceive; or to construct or manufacture
Example
The witness fabricated his testimony to protect himself.
证人为了保护自己而编造了他的证词。
B1 noun freɪm

Frame

框架
Meaning
A rigid structure that surrounds something such as a picture, door, or windowpane.
Example
A framed family tree can be displayed in your home.
一个框架化的家谱可以在您的家中展示。
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 /ˈfræɡməntɪd/

fragmented

碎片化, 分割, 不完整
Meaning
Having been broken into fragments; disjointed or incomplete.
Example
The information was fragmented and difficult to understand.
信息被碎片化了，难以理解。
B1 noun, verb /flæɡ/

flag

Meaning
a piece of fabric with a symbol or colors; or to mark or signal attention
Example
They raised the national flag during the ceremony.
A2 noun /ˈfɑːr.mər/

Farmer

农民
Meaning
a person who grows crops or raises animals for food or profit
Example
The farmer planted rice in the fertile fields this season.
本季，农民在肥沃的田地里种植了水稻。
B2 noun /ˈfreʃmən/

freshman

大一新生
Meaning
a first-year student at a high school, college, or university
Example
The freshman felt nervous on his first day at university.
大一新生在大学的第一天感到紧张。
C1 noun /ˈfɛləni/

felony

重罪
Meaning
a serious crime, usually punishable by imprisonment for more than one year
Example
He was convicted of a felony and sentenced to ten years in prison.
他因重罪被定罪并被判处十年监禁。
A2 adjective /fɪfθ/

fifth

第五
Meaning
constituting number five in a sequence
Example
She lives on the fifth floor of the building.
她住在大楼的第五层。
A2 noun /fɑːrm/

farm

农场
Meaning
an area of land used for growing crops and raising animals
Example
They live on a farm with many animals.
他们住在一个有许多动物的农场。
A2 adjective /fɪt/

Fit

合适的; 适当的; 健康的; 身体状况良好的; 准备好的
Meaning
suitable; appropriate; healthy; in good physical condition; ready
Example
He is fit and healthy.
他健康且状态良好。
B2 noun /ˈfɛmənɪst/

feminist

女性主义者
Meaning
a person who supports equal rights and opportunities for women and men
Example
She proudly calls herself a feminist and fights for gender equality.
她自豪地称自己为女性主义者，并为性别平等而奋斗。
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。
B2 adjective /ˈfæktʃuəl/

Factual

基于事实的; 真实的
Meaning
based on facts; accurate; true
Example
The report contains only factual information.
报告仅包含事实性的信息。
B2 adjective /ˌfɔːrθˈkʌmɪŋ/

forthcoming

即将到来
Meaning
about to happen soon; willing to share information
Example
The company announced its forthcoming product launch.
公司宣布了即将到来的产品发布。
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。
B1 verb /fel/

fell

砍倒, 伐木
Meaning
to cut down a tree; to cause to fall; to strike down
Example
The lumberjacks felled several trees in the forest today.
伐木工今天在森林里砍倒了几棵树。
C1 noun /fiːt/

feat

壮举
Meaning
an achievement that requires great courage, skill, or strength
Example
Climbing Mount Everest was a remarkable feat.
攀登珠穆朗玛峰是一项非凡的壮举。
B2 adjective /ˈfes.tɪv/

Festive

节日的; 欢乐的; 节庆的
Meaning
joyful; celebratory; having the characteristics of a festival
Example
The house looked festive with colorful decorations.
房子看起来很有节日气氛，装饰色彩斑斓。
B2 adjective /ˈfɪr.fəl/

fearful

害怕的
Meaning
feeling afraid or showing fear
Example
She was fearful of walking alone at night.
她害怕夜晚独自走路。
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。
C2 noun /ˈflɛkʃən/

flection

弯曲
Meaning
The act of bending or the state of being bent, especially of a limb or joint.
Example
The doctor tested the patient's knee flection during the examination.
医生在检查过程中测试了病人的膝盖弯曲。
C1 noun, verb /ˈfɜːrloʊ/

furlough

临时休假
Meaning
temporary leave of absence from work, especially that granted to an employee or soldier
Example
Many workers were placed on furlough during the crisis.
许多工人在危机期间被放置在休假状态。
C1 adjective /ˈfeɪl.seɪf/

fail-safe

故障保护
Meaning
designed to prevent failure or accidents; guaranteed to work correctly
Example
The engineers installed a fail-safe mechanism in the nuclear plant.
工程师在核电厂安装了故障保护机制。
B1 noun /ˈfaɪər.mən/

Fireman

消防员
Meaning
a person whose job is to extinguish fires and rescue people
Example
The brave fireman rescued the family from the burning building.
勇敢的消防员从燃烧的建筑中救出了家庭。
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。
A2 adjective, noun /ˈfeɪvərɪt/

favorite

最喜欢的
Meaning
Preferred over all others; something or someone especially liked.
Example
Chocolate is my favorite ice cream flavor.
巧克力是我最喜欢的冰淇淋口味。
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。
A2 noun, verb /fɔːrm/

form

形状 / 表格
Meaning
the shape or structure of something; to bring something into existence
Example
Students filled out the registration form.
学生填写了注册表格。
A2 noun/verb /fɛns/

fence

篱笆
Meaning
a barrier, usually made of wood or wire, that surrounds an area; to enclose with a barrier
Example
They built a fence around the garden.
他们在花园周围建了一道篱笆。
A2 noun /ˈfɑː.mɪŋ/

farming

农业
Meaning
the activity or business of growing crops and raising animals for food or other products
Example
Farming requires both hard work and knowledge about the land.
农业需要辛勤的工作和对土地的知识。
C2 adjective /ˈfæləbl/

fallible

容易犯错
Meaning
capable of making mistakes or being wrong
Example
Even experts are fallible and can make errors.
即使是专家也会犯错。
B1 noun ˈfæmɪli triː

Family Tree

家谱
Meaning
A diagram showing the relationships between people in several generations of a family.
Example
Creating a family tree helps understand family history.
创建家谱有助于理解家庭历史。
C2 noun, verb /ˈfɪlɪˌbʌstər/

filibuster

通过长时间演讲延迟立法行动的策略；使用这种策略
Meaning
a tactic of delaying legislative action by prolonged speech; to use such a tactic
Example
The senator filibustered for hours to prevent the bill from passing.
参议员费利巴斯特了几个小时，以阻止该法案通过。
A1 noun /faɪər/

Fire

火
Meaning
combustion or burning, in which substances combine chemically with oxygen from the air
Example
The fire in the fireplace provided warmth and a cozy atmosphere.
壁炉中的火提供了温暖和舒适的氛围。
B2 adjective /ˈfɔːrtʃənət/

fortunate

幸运的
Meaning
Having good luck or receiving something desirable by chance.
Example
She was fortunate to escape the accident without injuries.
她很幸运没有在事故中受伤。
C2 noun /fɔːn/

faun

法恩（神话生物）
Meaning
a mythological creature that is half human and half goat
Example
The sculpture depicted a playful faun dancing in the forest.
雕塑描绘了一个在森林里跳舞的顽皮法恩。
C1 adjective /ˈflæʃi/

flashy

华丽的，炫耀的
Meaning
ostentatious or showy in a way that attracts attention
Example
He drove a flashy sports car through the city streets.
他开着一辆华丽的跑车穿过城市街道。
C1 noun /ˈfɔːls.hʊd/

Falsehood

虚伪; 谎言
Meaning
the state of being untrue; a lie
Example
The politician was caught spreading falsehoods about his opponent.
那位政治家被抓到散播关于对手的谎言。
A1 adjective /ˈfeɪ.məs/

famous

著名
Meaning
Known about by many people; renowned.
Example
This area is famous for its unique heritage.
这个地区因其独特的遗产而著名。
B2 noun /ˈfaɪbər/

fiber

纤维
Meaning
a thread or filament from which a textile is formed; dietary substance from plants that aids digestion
Example
Fruits and vegetables are high in fiber.
水果和蔬菜富含纤维。
C1 verb /fɔːrˈkloʊz/

foreclose

止赎
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
银行在错过几个月付款后决定没收财产。
C1 verb /ˈfɪdʒɪt/

fidget

坐立不安，焦虑不安
Meaning
to make small movements, especially because of nervousness or impatience
Example
The child began to fidget during the long lecture.
孩子在漫长的讲座中开始不停地动。
B2 noun /ˈfʌndˌreɪzɪŋ/

fundraising

筹款活动
Meaning
the process of collecting money for a cause or project
Example
The organization is organizing a fundraising event.
该组织正在组织一个筹款活动。
C2 adjective /ˈfɛtɪd/

fetid

有恶臭的，令人不快的
Meaning
having a strong, unpleasant smell
Example
The fetid smell from the garbage was unbearable.
垃圾散发出的恶臭让人无法忍受。
C1 noun /ˈfeɪvərɪtɪzəm/

favoritism

偏袒
Meaning
the practice of giving unfair preferential treatment to one person or group
Example
The manager was accused of favoritism towards certain employees.
经理被指控偏袒某些员工。
B2 adverb /fɔːrθ/

forth

向前
Meaning
forward in place, time, or order
Example
The leader stepped forth to address the crowd.
领导走上前去与人群讲话。
B2 adjective /ˈfʌsi/

fussy

挑剔
Meaning
hard to please; very concerned with details
Example
The child is very fussy about what she eats.
这个孩子对她吃的东西非常挑剔。
B1 adjective /ˈfəʊkəst/

focused

专注
Meaning
Directing a great deal of attention or effort toward a particular activity, situation, or person.
Example
Staying focused during work hours enhances productivity.
在工作时间保持专注提高了生产力。
A1 adjective /fjuː/

few

少数
Meaning
A small number of; not many.
Example
Only a few students attended the class.
只有少数学生参加了课堂。
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。
C2 verb /ˈflædʒəˌleɪt/

flagellate

鞭打或以惩罚或自我约束的方式鞭打自己
Meaning
to whip or flog someone, either literally or as a form of punishment or self-discipline
Example
In history, some monks would flagellate themselves as penance.
在历史上，一些僧侣会因忏悔而鞭打自己。
C1 noun /ˈfæm.ɪn/

Famine

饥荒
Meaning
extreme scarcity of food; a period when food is extremely scarce
Example
The severe drought led to widespread famine in the region.
严重的干旱导致该地区广泛的饥荒。
B1 adjective /fɪkst/

fixed

固定的，稳定的
Meaning
firmly in place; not changing or movable
Example
The schedule for the meeting is fixed for Monday morning.
会议时间表已定于周一早上。
B2 noun ˌfʌŋk.ʃəˈnæl.ə.ti

functionality

功能性
Meaning
The quality of being functional; the ability to work or operate as intended.
Example
The new refrigerator has improved functionality.
新冰箱提高了功能性。
B2 noun /ˈfaɪ.bər/

fibre

纤维
Meaning
A thread or filament from which a vegetable tissue, mineral substance, or textile is formed; dietary material that aids digestion.
Example
Eating foods rich in fibre can improve your digestion.
食用富含纤维的食物可以改善消化。
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 noun ˌflʌk.tʃuˈeɪ.ʃən

fluctuation

波动
Meaning
An irregular rising and falling in number or amount; a variation.
Example
The stock market experiences frequent fluctuation.
股市经常经历波动。
A2 noun /fækt/

fact

事实
Meaning
A thing that is known or proved to be true
Example
It is a fact that the Earth orbits the Sun.
地球绕太阳转，这是一个事实。
C1 noun /ˈfɪʃ.ər/

fissure

裂缝
Meaning
a long, narrow opening or crack in a surface or object
Example
The earthquake caused a deep fissure in the road.
地震在路面上造成了一个深深的裂缝。
C1 verb ˈflʌk.tʃu.eɪt

fluctuate

波动
Meaning
To regularly increase or decrease.
Example
Stock prices fluctuate due to market conditions.
股价因市场条件而波动。
B2 noun /fleʃ/

Flesh

肉
Meaning
the soft substance consisting of muscle and fat that is found between the skin and bones
Example
The doctor examined the wound to check if it had penetrated the flesh.
医生检查了伤口，看看它是否已经穿透了肉体
C1 noun /fəˈtæləti/

fatality

致命事故
Meaning
An occurrence of death by accident, disaster, or violence.
Example
The accident resulted in one fatality.
这场事故导致了一人死亡。
B1 noun /ˈfaɪn.dɪŋ/

finding

发现，经过调查后得出的结论或结果
Meaning
a discovery, conclusion, or result reached after investigation
Example
The scientist published her findings in a leading journal.
科学家在一家领先的期刊上发布了她的发现。
C1 noun, verb /fɔːrd/

ford

浅滩
Meaning
A shallow place in a river where one can cross; to cross a river at such a place.
Example
The travelers decided to ford the river at dawn.
旅行者决定在黎明时分穿越河流。
B2 noun /fɔːrt/

Fort

堡垒
Meaning
a strong building or group of buildings where soldiers live and defend
Example
The ancient fort stood on top of the hill for centuries.
古老的堡垒屹立在山顶上数百年。
B1 noun faʊnˈdeɪʃən

foundation

基础
Meaning
The lowest load-bearing part of a building, typically below ground level.
Example
The foundation of the building was laid with strong materials.
建筑物的基础是用坚固的材料铺设的。
C1 adjective, adverb (informal, vulgar) /ˈfʌkɪŋ/

fucking

他妈的 (粗俗词语用于强调)
Meaning
used for emphasis, often expressing anger or frustration (vulgar slang)
Example
It was a fucking disaster!
这真是个他妈的灾难！
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。
C1 noun /flæt fɪʃ/

Flat fish

比目鱼
Meaning
a type of fish with a flattened body that lives on the sea floor
Example
Flat fish like sole and flounder are excellent for grilling.
像鳎鱼和比目鱼这样的平鱼非常适合烤制。
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。
B1 verb /floʊt/

float

浮动
Meaning
to rest or move on the surface of a liquid or in the air without sinking
Example
The boat began to float gently down the river.
船开始轻轻漂浮在河面上。
B1 noun /ˈfaɪ.tər/

Fighter

战斗机
Meaning
a military aircraft designed for attacking other aircraft; a person who fights
Example
The fighter jet flew overhead during the military parade.
战斗机在军事游行中飞过我们头顶。
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。
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。
C2 noun /ˈfʊl.krəm/

fulcrum

支点
Meaning
The point or support on which a lever pivots; a central or essential point of activity or support.
Example
The teacher became the fulcrum of change in the school.
老师成为了学校变革的支点。
B2 adjective, noun, verb /faʊl/

foul

Meaning
offensive to the senses; dirty or unpleasant; in sports, an unfair or illegal act
Example
The player was penalized for committing a foul.
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。
B2 adjective /fɪərs/

Fierce

猛烈的; 好斗的; 展示强烈情感或决心的
Meaning
violent; aggressive; showing strong feeling or determination
Example
The fierce storm destroyed many houses in the village.
猛烈的风暴摧毁了村里许多房屋。
B1 noun /ˈfeɪvər/

favor

帮助
Meaning
An act of kindness or approval.
Example
She asked him for a small favor.
她请求了一个小忙。
A2 noun /faɪl/

File

锉刀
Meaning
a tool with a rough surface for smoothing or shaping hard materials; a collection of papers or data
Example
He used a metal file to smooth the rough edges.
他使用了一把金属锉刀来平滑粗糙的边缘。
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。
B2 noun /ˈfɜː.tɪ.laɪ.zər/

fertilizer

肥料
Meaning
a substance added to soil to make plants grow more successfully
Example
Farmers use fertilizer to increase crop production.
农民使用肥料来提高作物产量。
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 /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。
A1 noun /ˈfɛb.ruˌɛr.i/

february

二月
Meaning
The second month of the year in the Gregorian calendar, typically having 28 days, or 29 in a leap year.
Example
My birthday is in February, so I always look forward to this month.
我的生日在二月，所以我总是期待这个月。
B1 adverb /ˈfeər.li/

Fairly

公正地; 适度地; 合理地
Meaning
in a just manner; moderately; reasonably
Example
The test was fairly easy, but some questions were challenging.
测试相当简单，但一些问题具有挑战性。
C2 verb /frɪz/

frizz

Meaning
to form into small, tight curls or cause hair to become fuzzy and tangled
Example
The humid weather caused her hair to frizz.
B2 adjective /flɔːd/

flawed

有缺陷的
Meaning
having a mistake or fault that reduces its value or quality
Example
The flawed design of the car led to a recall.
汽车设计有缺陷，导致了召回。
C2 noun /fluːk/

fluke

侥幸
Meaning
A stroke of luck; an unexpected piece of good fortune.
Example
Winning the lottery was a complete fluke.
中彩票简直就是一次完全的侥幸。
C1 adjective /ˈfɛrəl/

feral

野生的
Meaning
existing in a wild or untamed state; not domesticated
Example
The feral cat roamed the streets at night.
那只野猫在晚上游荡在街头。
C2 noun /foʊ ˈpɑː/

faux pas

社交失误
Meaning
a social blunder or mistake in etiquette
Example
He committed a major faux pas by forgetting her birthday.
他因为忘记她的生日而犯了一个大社交失误。
B2 noun /fɛər/

fare

车费
Meaning
the money paid for a journey on public transport; also food or treatment provided
Example
The bus fare to the city center is five dollars.
到市中心的公交车费是五美元。
B2 verb /fɔɪl/

foil

挫败
Meaning
To prevent something (especially a plan) from succeeding.
Example
The police foiled the robbery attempt.
警方挫败了抢劫企图。
B1 noun/verb /ˈfaɪtɪŋ/

fighting

战斗
Meaning
the act of engaging in a physical or verbal conflict
Example
The soldiers were fighting bravely on the battlefield.
士兵们在战场上英勇作战。
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 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。
B2 adjective /ˌfʌndəˈmɛntl/

fundamental

Meaning
forming a necessary base or core; of central importance
Example
Honesty is a fundamental principle of good leadership.
A2 noun /ˈfɔːrənər/ or /ˈfɑːrənər/

foreigner

外国人
Meaning
A person from another country.
Example
The city welcomes every foreigner with kindness.
这个城市欢迎每一位外国人。
A2 adjective /ˈfɪnɪʃt/

finished

完成, 结束
Meaning
completed or brought to an end
Example
The painting is finished and ready to display.
这幅画已经完成，准备展示。
A2 noun fɔːrs

force

力
Meaning
A physical power or energy that can cause movement, change, or influence.
Example
Strong nuclear force binds particles.
强大的核力将粒子结合在一起。