C2 verb /fɔrˈswɛr/

forswear

放弃

Meaning

to renounce or reject; to give up completely

Example

He forswore his old habits and started a new life.

他放弃了旧习惯，开始了新的生活。

B2 noun /fraɪt/

Fright

恐惧; 惊恐; 吓

Meaning

a sudden intense feeling of fear; a shock or surprise that causes fear

Example

The loud thunder gave her such a fright that she dropped her coffee cup.

那声雷鸣让她吓得掉了咖啡杯。

B2 adverb /ˈfɜ:rst hænd/

First-hand

第一手; 直接

Meaning

directly experienced or obtained; from the original source

Example

I experienced the earthquake first-hand.

我亲身经历了地震。

B2 adjective /ˈfɛmənɪn/

feminine

女性的

Meaning

having qualities traditionally associated with women; feminine in nature

Example

She has a very feminine style of dressing.

她有非常女性化的穿衣风格。

A2 noun /fɒks/

Fox

狐狸

Meaning

a wild animal related to dogs, with a pointed face and thick fur

Example

The red fox is known for its cunning nature.

红狐以其狡猾的天性而闻名。

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 verb /fɔɪst/

foist

强加

Meaning

To impose something unwelcome or unnecessary on someone.

Example

He tried to foist his old books onto his friends.

他试图把他的旧书强加给朋友们。

B2 noun /ˈfeɪbəl/

fable

寓言

Meaning

a short story, typically featuring animals as characters, that conveys a moral lesson

Example

Aesop’s fables are famous for teaching valuable lessons through simple stories.

伊索的寓言通过简单的故事传授宝贵的教训。

B2 verb ˈfaɪ.nəl.aɪz

finalize

最终确定

Meaning

To complete arrangements for something; put into final form.

Example

The treaty was finalized after the discussions.

协议在讨论后最终确定。

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。

A2 noun ˈfriː.dəm

freedom

自由

Meaning

The power or right to act, speak, or think as one wants without hindrance or restraint.

Example

Freedom empowers self-expression.

自由促进自我表达。

C2 adjective /ˈfɛstəl/

festal

节日的，庆祝的

Meaning

relating to a festival or celebration

Example

The hall was decorated in a festal manner for the wedding.

婚礼的大厅被装饰得节日气氛十足。

C2 adjective /ˈfluːtɪd/

fluted

有沟槽的

Meaning

having grooves or ridges, often for decoration

Example

The vase had a beautiful fluted design around the rim.

花瓶的边缘有一个美丽的有沟槽的设计。

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 adjective /ˈfleɪɡrənt/

flagrant

显眼且明显错误

Meaning

shockingly noticeable or evident; glaringly wrong

Example

It was a flagrant violation of the rules.

这是对规则的明显违反。

B2 adjective /ˈfraɪtfəl/

frightful

可怕的

Meaning

causing fear or horror; very unpleasant

Example

The hikers faced frightful weather conditions on the mountain.

登山者面临着山中可怕的天气条件。

B2 noun /ˈfæbrɪk/

fabric

布料

Meaning

Cloth or material produced by weaving or knitting fibers.

Example

The tailor used silk fabric to make the dress.

裁缝用丝绸布料做了这件衣服。

C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

立即; 无延迟; 马上

Meaning

immediately; without delay; at once

Example

The manager ordered the employee to stop the unsafe practice forthwith.

经理命令员工立即停止危险的做法。

C2 adjective /ˈfæsaɪl/

Facile

容易的; 浅显的; 缺乏深度的

Meaning

easily achieved; superficial; lacking depth

Example

His facile explanation didn't address the real problem.

他的简单解释没有解决真正的问题。

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。

B2 noun /ˈfɪks.tʃər/

fixture

固定物，安装设备

Meaning

a permanent or fixed object, often in a house or building

Example

The bathroom fixture was installed yesterday.

浴室设备昨天已安装。

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！

C1 noun /ˈfoʊk.lɔːr/

folk-lore

民间传说

Meaning

The traditional beliefs, customs, stories, songs, and practices of a community, passed down through generations.

Example

Bangladeshi folk-lore is rich with myths and legends.

中国的民间传说充满了神话和传说。

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。

C2 adjective fɔːˈtjuː.ɪ.təs

fortuitous

偶然的

Meaning

Happening by accident or chance rather than design; lucky or fortunate.

Example

Their meeting was purely fortuitous.

他们的相遇完全是偶然的。

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。

C2 adjective /ˈfʌsti/

fusty

陈腐的，霉臭的

Meaning

smelling stale, damp, or stuffy; old-fashioned

Example

The room smelled fusty after being closed for months.

房间在关了几个月后有了陈腐的味道。

C1 verb /fɔːrˈɡoʊ/

forgo

放弃

Meaning

to decide not to do or have something

Example

She decided to forgo dessert to maintain her diet.

她决定放弃甜点以保持她的饮食。

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。

C1 verb /ˈfɔːlsɪfaɪ/

falsify

伪造

Meaning

to make something false or to misrepresent

Example

He tried to falsify the documents to avoid taxes.

他试图伪造文件以避免税收。

B2 adjective /ˈfɛdərəl/

federal

联邦的

Meaning

Relating to the central government of a federation.

Example

The federal government passed a new law on healthcare.

联邦政府通过了一项关于医疗保健的新法律。

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。

C2 adjective /ˈfraɪəbl/

friable

脆弱

Meaning

Easily crumbled or reduced to powder.

Example

The old brick wall was friable and broke apart at a touch.

那堵老砖墙是脆弱的，轻轻一碰就破裂了。

C1 noun ˈfɔː.saɪt

foresight

远见

Meaning

The ability to predict or the action of predicting what will happen or be needed in the future.

Example

His foresight helped the company avoid financial losses.

他的远见帮助公司避免了经济损失。

B1 noun /ˈfeɪ.vər/

Favour

好意; 帮助; 仁慈

Meaning

approval, support, or liking for someone or something; a kind or helpful act

Example

Could you do me a favour and help me move this heavy box?

你能帮我一个忙，帮我搬动这个重箱子吗？

C2 adjective /ˈfæn.sɪ.ləs/

fanciless

没有想象力的，普通的

Meaning

without imagination or creativity; plain or ordinary

Example

His drawings were simple and fanciless.

他的画作既简单又没有想象力。

C2 noun /ˈflætʃələns/

flatulence

消化系统中的气体积聚

Meaning

the accumulation of gas in the digestive system; excessive gas in the stomach or intestines

Example

Eating beans can sometimes cause flatulence.

吃豆子有时会引起腹胀。

C1 adjective /ˈfɑːð.ər.ləs/

fatherless

没有父亲

Meaning

without a father

Example

The fatherless child relied on the support of his community.

这个没有父亲的孩子依赖于他社区的支持。

A2 adjective /fɔːls/

False

虚假; 错误; 欺骗性; 人造

Meaning

not true; incorrect; deceptive; artificial

Example

The witness gave false testimony in court.

证人给出了虚假的证词。

B1 noun /fɔːlt/

Fault

过错; 错误; 缺陷

Meaning

an unattractive or unsatisfactory feature; responsibility for an accident or misfortune

Example

The accident was caused by a fault in the car's braking system.

事故是由汽车刹车系统的故障引起的。

C1 noun /ˈfɔːrmən/

foreman

负责一组工人的人，特别是在工厂或建筑工地上

Meaning

a person in charge of a group of workers, especially in a factory or construction site

Example

The foreman supervised the workers on the construction site.

工头在建筑工地上监督工人。

C1 noun /fjuːd/

feud

争吵, 仇恨

Meaning

a prolonged and bitter quarrel or conflict, often between families or groups

Example

The two families have been in a feud for generations.

这两个家庭已经世代争斗。

B2 adverb /ˈfɜ:rmli/

Firmly

坚决

Meaning

in a strong, steady, and unwavering manner

Example

She firmly believed in her decision.

她坚信自己的决定。

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。

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。

A2 noun /flaɪt/

flight

航班 / 航班

Meaning

the act of flying, typically through the air; or a scheduled trip by an aircraft

Example

Our flight to London was delayed due to bad weather.

我们飞往伦敦的航班因恶劣天气而延误。

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。

C2 adjective /ˈfuːlˌhɑːrdi/

foolhardy

轻率的

Meaning

Recklessly bold or rash; taking foolish risks.

Example

It was foolhardy of him to climb the mountain without proper gear.

他在没有适当装备的情况下攀登山峰，真是轻率的行为。

B2 noun ˈflæʃkɑːrdz

flashcards

学习卡片

Meaning

Cards containing small amounts of information, held up for students to see, as an aid to learning.

Example

Flashcards help in quick memorization.

闪卡帮助快速记忆。

B1 noun /ˈfɔːr.mæt/

Format

格式

Meaning

the way in which something is arranged or set out; the shape, size, and presentation of a book or document

Example

Please submit your report in PDF format by the end of the week.

请在本周末之前以PDF格式提交您的报告。

C1 noun ˈfɜːr.vɚ

fervor

热情或热衷

Meaning

Strong passion or enthusiasm for something.

Example

He spoke with great fervor about his vision for the company.

他以极大的热情谈论他对公司未来的愿景。

B2 noun ˈfeɪs tə ˈfeɪs ˈbætl

face-to-face battle

面对面的战斗

Meaning

A direct confrontation or fight between opposing forces.

Example

The warriors fought a face-to-face battle with the enemies.

战士们与敌人进行了面对面的战斗。

C2 verb /flɛdʒ/

fledge

飞翔

Meaning

To develop wing feathers large enough for flight; to bring up until able to fly.

Example

The young birds will fledge in a few weeks.

年轻的鸟将在几周内学会飞行。

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。

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。

B2 adjective /ˈfeɪvərəbl/

favourable

有利的

Meaning

Expressing approval, support, or positivity; advantageous or beneficial

Example

The weather conditions were favourable for the outdoor event.

户外活动的天气条件是有利的。

C2 noun /ˈfaɪnəri/

finery

昂贵或精致的衣服

Meaning

expensive or elaborate clothes, decorations, or accessories

Example

She attended the party in her finest finery.

她穿着最好的衣服参加了聚会。

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 /ˈfæs.ɪt/

facet

方面, 特点, 部分

Meaning

One of the many aspects or features of something; a particular part or element of something.

Example

Every facet of the project was carefully analyzed.

项目的每个方面都进行了仔细分析。

C2 verb /ˈfrʌktɪˌfaɪ/

fructify

使…成果丰硕

Meaning

To make fruitful or productive; to bear fruit.

Example

The new policies will help fructify the economic potential of the region.

新的政策将有助于使该地区的经济潜力丰产。

B2 verb /flɪp/

flip

翻转

Meaning

to turn over quickly or suddenly; to toss lightly

Example

She flipped the pancake in the pan.

她把煎饼在锅里翻了个面。

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 noun /ˈflæɡ ˌɒfɪsər/

flag-officer

旗官

Meaning

a senior naval officer entitled to fly a flag to mark the command

Example

The flag-officer reviewed the fleet before the ceremony.

旗官在仪式前检查了舰队。

C1 adjective /ˈfrɔːdjʊlənt/

fraudulent

欺诈的

Meaning

Involving or using deceit, especially criminal deception.

Example

He was arrested for making fraudulent insurance claims.

他因提交欺诈性保险索赔而被捕。

B2 noun /ˈfeɪ.lɪŋ/

Failing

失败; 缺点; 弱点

Meaning

a weakness, especially in a person's character; a fault

Example

His only failing is that he talks too much during meetings.

他唯一的失败是他在会议中说得太多。

C2 noun /ˈfriːˌθɪŋkər/

freethinker

自由思想者

Meaning

A person who forms opinions based on reason and independent thought rather than tradition or authority.

Example

Voltaire was considered a great freethinker of his time.

伏尔泰被认为是他时代伟大的自由思想家。

B2 adverb /ˈfræŋkli/

Frankly

坦率地说; 直言不讳;

Meaning

honestly; openly; in a direct manner

Example

Frankly, I think this plan needs more consideration.

坦率地说，我认为这个计划需要更多的考虑。

A2 verb /fraɪ/

fry

油炸

Meaning

to cook food in hot oil or fat

Example

She fries eggs for breakfast every morning.

她每天早晨煎蛋作为早餐。

C1 noun /fruːˈɡæl.ə.ti/

frugality

节俭

Meaning

The quality of being economical in use or expenditure; not wasteful.

Example

Frugality is essential for saving money effectively.

节俭对有效节省钱至关重要。

A2 noun /ˈfæʃ.ən/

fashion

时尚

Meaning

a popular or accepted style of clothing, behavior, or way of doing something

Example

She always keeps up with the latest fashion.

她总是跟上最新的时尚。

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。

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。

B2 noun /flɔː/

flaw

缺陷

Meaning

a defect or imperfection in something

Example

The diamond had a small flaw that was barely visible.

钻石有一个几乎看不见的小缺陷。

B2 noun /ˈfeð.ər/

Feather

鸟羽毛

Meaning

one of the light structures that cover a bird's body

Example

The peacock has beautiful colorful feathers.

孔雀有美丽的五彩斑斓的羽毛。

C1 adjective /ˈfaɪə.ri/

Fiery

火热的; 激情的; 暴躁的

Meaning

burning; passionate; hot-tempered; showing strong emotion

Example

She has a fiery temper that flares up quickly.

她有一个火热的脾气，容易迅速发火。

C2 adjective /fjuːˈɡeɪʃəs/

fugacious

短暂的

Meaning

Lasting only a short time; fleeting or ephemeral.

Example

Youth is beautiful but fugacious.

青春是美丽的，但它是短暂的。

C2 noun /ˈfeɪ.tə.lɪ.zəm/

fatalism

宿命论

Meaning

the belief that all events are predetermined and inevitable

Example

He embraced fatalism, believing that nothing he did could change his destiny.

他接受了宿命论，相信无论他做什么，都无法改变他的命运。

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 /fliːt/

fleet

舰队

Meaning

a group of ships, vehicles, or aircraft operating together under one command

Example

The navy deployed its entire fleet for the exercise.

海军为演习部署了整个舰队。

C2 adjective /ˈfræk.ʃəs/

Fractious

暴躁的；易怒的；难以控制的

Meaning

irritable and quarrelsome; difficult to control; bad-tempered

Example

The fractious child refused to follow any of the teacher's instructions.

那个易怒的孩子拒绝遵循老师的任何指示。

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 /ˈfrɛtfəl/

fretful

焦虑的

Meaning

Feeling or showing distress or irritation.

Example

The baby was fretful all night and could not sleep.

宝宝整晚都很焦虑，无法入睡。

C2 noun /ˈfiːæt/

fiat

法令，命令

Meaning

an official order or decree; authoritative command

Example

The new policy was enacted by royal fiat.

新政策通过皇帝的命令实施。

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。

C1 noun /ˈfjuː.tʃə.rɪst/

futurist

未来主义者

Meaning

A person who studies or predicts the future, especially trends in science, technology, or society.

Example

The futurist predicted major changes in transportation within the next decade.

未来主义者预测了下一个十年交通运输的重大变化。

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。

C2 verb /fɪˈneɪɡəl/

finagle

通过聪明或欺骗得到某物

Meaning

to obtain something by cleverness or trickery

Example

He finagled a free ticket by pretending to be a VIP guest.

他通过假装是VIP客人来获得了一张免费票。

A1 adjective /ˈfʌn.i/

Funny

有趣的; 奇怪的; 好笑的;

Meaning

humorous; strange; amusing;

Example

He told a funny joke that made everyone laugh.

他讲了一个有趣的笑话，让大家都笑了。

C2 verb /ˈfɜːrbɪʃ/

furbish

抛光

Meaning

to polish, renovate, or give a fresh look to something

Example

The workers furbished the old sword until it gleamed like new.

工人们把旧剑抛光，直到它像新的一样闪闪发光。

A1 adjective /fɑːst/

Fast

快速; 急速

Meaning

moving or happening quickly; rapid; swift

Example

She runs very fast in the morning.

她早上跑得非常快。

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。

C2 verb /ˈfɒn.dəl/

fondle

抚摸

Meaning

To stroke or caress lovingly or gently.

Example

She fondled the kitten gently in her lap.

她轻柔地抚摸着她膝盖上的小猫。

C1 noun /fɪˈdɛl.ɪ.ti/

fidelity

忠诚

Meaning

Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.

Example

A dog's fidelity to its owner is unmatched.

狗对主人忠诚无比。

A2 verb /feɪl/

fail

失败

Meaning

to not succeed in achieving something; to be unsuccessful

Example

He failed to complete the assignment on time.

他未能按时完成任务。

A2 noun /flʌd/

Flood

洪水

Meaning

an overflow of a large amount of water beyond its normal limits

Example

The heavy rain caused a flood in the village.

暴雨导致村庄发生了洪水。

C2 noun /ˈfrɛʃɪt/

freshet

突然的河流泛滥

Meaning

A sudden overflow of a stream or river caused by heavy rain or melting snow.

Example

After the storm, the river turned into a raging freshet.

暴风雨过后，河流变成了猛烈的freshet。

B2 noun /faʊl/

Fowl

家禽

Meaning

a domesticated bird kept for meat or eggs; chicken or other poultry

Example

The farmer raised fowl in his backyard for fresh eggs and meat.

农民在后院养家禽，提供新鲜的鸡蛋和肉。

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。

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。

B1 adjective /ˈfrʌstreɪtɪd/

frustrated

沮丧

Meaning

feeling annoyed or upset because of inability to achieve something

Example

She felt frustrated after failing the exam.

她在考试失败后感到沮丧。

B2 noun /ˈfʊtɪdʒ/

footage

视频录制

Meaning

a recorded film or video, especially one that is used for news or documentaries

Example

The footage of the protest was shown on television all day.

抗议的录像整天在电视上播放。

忠诚的; 忠实的; 可靠的

Meaning

loyal and committed; reliable; true to one's beliefs

Example

She remained faithful to her principles throughout her career.

她在整个职业生涯中始终忠诚于自己的原则。