frighten
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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。
A1 noun /ˈfriː taɪm/

free time

空闲时间
Meaning
time when a person is not working or occupied and can do activities they enjoy
Example
She likes to read books in her free time.
她喜欢在空闲时间读书。
B1 adverb /ˈfʊli/

fully

完全
Meaning
completely or entirely; to the fullest extent
Example
She is fully aware of the risks.
她完全意识到这些风险。
C1 noun ˌfiː.zəˈbɪl.ə.ti

feasibility

可行性
Meaning
The state or degree of being easily or conveniently done; possibility.
Example
The company conducted a feasibility study before launching the project.
公司在启动项目之前进行了可行性研究。
C2 noun /ˈfɔːltˌfaɪndər/

faultfinder

找茬者
Meaning
a person who habitually finds fault with others
Example
He is such a faultfinder that nothing anyone does is ever good enough.
他是一个找茬者，任何人做的事情都永远不够好。
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。
C1 noun /ˈfoʊliɪdʒ/

foliage

树叶
Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
秋天的树叶在公园里看起来很惊艳。
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.
C2 noun /fiːˈkʌndɪti/

fecundity

丰饶，繁殖力
Meaning
the ability to produce an abundance of offspring or new growth; fertility
Example
The fecundity of the river delta supports diverse wildlife.
河流三角洲的丰饶支持着多样化的野生动物。
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。
B2 adjective /ˈfræntɪk/

frantic

疯狂的
Meaning
Extremely anxious, hurried, or out of control due to fear or excitement.
Example
She made a frantic call to her family after the accident.
事故发生后，她紧急给家人打了电话。
B2 noun /fɪɡ/

Fig

无花果
Meaning
a soft sweet fruit that is purple or green on the outside and has many small seeds
Example
The fig tree in our backyard produces delicious fruits every summer.
我们后院的无花果树每年夏天都能结出美味的果实。
A1 numeral /fɔːr/

four

四
Meaning
The number equivalent to the sum of two and two; one more than three.
Example
She has four books on her desk.
她的桌子上有四本书。
C1 noun /frəˈdʒɪl.ɪ.ti/

fragility

脆弱性
Meaning
The quality of being fragile; delicateness.
Example
The cornea's fragility increases with rubbing.
角膜的脆弱性随着摩擦而增加。
C1 noun /fæd/

fad

短暂流行的时尚，趋势
Meaning
a temporary fashion or trend; a short-lived craze
Example
The new diet became a popular fad among teenagers.
新的饮食成了青少年中的短暂流行趋势。
B1 verb /ˈfɛri/

ferry

渡船运输
Meaning
to transport by boat; to carry back and forth
Example
The boat ferried passengers across the river.
船把乘客运过了河。
C1 noun/verb /freɪ/

fray

争斗, 磨损
Meaning
As a noun, a fight or heated dispute; as a verb, to unravel or wear out through friction.
Example
He tried to stay calm, but his nerves began to fray during the argument.
他试图保持冷静，但在争论中他的神经开始磨损。
A2 verb /fiːd/

feed

喂
Meaning
to give food to a person or animal
Example
She feeds the birds every morning.
她每天早上喂鸟。
B1 adjective /ˈfɔːrmər/

former

前任
Meaning
Having been previously in a particular role or position.
Example
He is a former president of the association.
他是该协会的前任主席。
A2 noun /fæn/

Fan

粉丝; 扇子
Meaning
a person who has a strong interest in or admiration for a particular person or thing; a device for creating air current
Example
She is a huge fan of classical music and attends every concert in the city.
她是古典音乐的忠实粉丝，并参加城市中的每一场音乐会。
A2 noun /ˈfɪʃ.ər.mən/

Fisherman

渔夫
Meaning
a person who catches fish as a job or hobby
Example
The fisherman caught three large fish in the river today.
渔夫今天在河里抓住了三条大鱼。
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。
C2 noun /frɒnd/

frond

叶子
Meaning
A large, divided leaf of a fern, palm, or similar plant.
Example
The fern's frond stretched gracefully over the garden path.
蕨类植物的叶片优雅地伸展在花园小路上。
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。
C1 adjective /ˈfɔːrsəbl/

forcible

强行
Meaning
Done by force; using physical strength or power.
Example
The police made a forcible entry into the house.
警方强行进入了房屋。
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。
C2 adjective /ˈflɒrɪd/

florid

过度装饰的 / 红润
Meaning
Having a red or flushed complexion; or excessively ornate and intricate.
Example
The speaker’s florid style made the lecture hard to follow.
演讲者过度装饰的风格使得讲座难以理解。
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。
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。
C1 adjective ˈfɔːr.mɪ.də.bəl

formidable

强大的
Meaning
Inspiring fear or respect through being impressively large, powerful, intense, or capable.
Example
The boxer was a formidable opponent in the ring.
那名拳击手是拳台上一个强大的对手。
C1 noun /fɑːrs/

farce

闹剧
Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
会议变成了一场彻底的闹剧，大家都在争论。
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。
C2 adjective /ˈfɔːnɪŋ/

fawning

过分的恭维
Meaning
displaying exaggerated flattery or affection
Example
Her fawning compliments made everyone uncomfortable.
她过分的恭维让每个人都感到不自在。
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。
C1 verb/noun ˈfæð.əm

fathom

理解
Meaning
To understand after much thought; to measure the depth of water; to comprehend.
Example
It is difficult to fathom the depths of the ocean.
很难理解海洋的深度。
A2 noun /fæt/

Fat

脂肪
Meaning
a natural oily substance occurring in animal bodies; lipid used in cooking
Example
Too much fat in your diet can be unhealthy.
你饮食中脂肪过多可能对健康有害。
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。
C2 adjective /ˈfraʊzi/

frowzy

邋遢
Meaning
Unkempt, messy, or having a musty, unpleasant smell.
Example
He entered the room with a frowzy appearance after sleeping on the couch.
他在沙发上睡觉后，以邋遢的外貌走进了房间。
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 adjective /ˈflɔːrəl/

floral

花卉的
Meaning
Relating to flowers or decorated with flowers.
Example
She wore a beautiful floral dress to the party.
她穿着一件漂亮的花卉裙子去参加派对。
C1 adjective /ˈflɪmzi/

flimsy

脆弱的
Meaning
weak, fragile, or lacking in strength; not convincing
Example
The chair was too flimsy to support his weight.
这把椅子太脆弱了，无法支撑他的重量。
C1 noun /ˈfɔːrwɜːrd/

foreword

前言
Meaning
a short introduction at the beginning of a book, typically written by someone other than the author
Example
The foreword of the book was written by a famous historian.
这本书的前言是由一位著名的历史学家写的。
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。
B2 verb, noun, adjective /flʌʃ/

flush

臉紅 / 用水沖洗
Meaning
to become red in the face, usually from embarrassment, heat, or excitement; to clean something with a flow of water
Example
She flushed with embarrassment when she realized her mistake.
她因為羞愧而臉紅，當她意識到她的錯誤時。
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。
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。
C2 adjective /fækˈtɪʃəs/

factitious

人为的，不真实的
Meaning
artificial or fabricated; not natural or genuine
Example
The excitement in his story seemed factitious and forced.
他的故事中的兴奋感看起来是人为的且强迫的。
B1 verb /fəʊld/

fold

Meaning
to bend something, especially paper or cloth, so that one part covers another
Example
She folded the letter neatly before placing it in the envelope.
A1 adjective /frɛntʃ/

french

法国的
Meaning
Relating to France, its people, or their language.
Example
We enjoyed delicious French cuisine on our trip to Paris.
我们在巴黎的旅行中享用了美味的法国菜。
C2 noun /ˈfiːəlti/

fealty

忠诚与效忠
Meaning
loyalty or allegiance, especially to a sovereign or lord
Example
The knight swore fealty to his king.
骑士向国王宣誓效忠。
B1 noun /fiː/

fee

费用
Meaning
A payment made for a service or privilege.
Example
The lawyer charged a high fee for his services.
律师为他的服务收取了高额费用。
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。
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 adjective /fəˈloʊniəs/

felonious

与严重犯罪相关
Meaning
relating to or involved in serious criminal activity
Example
He was charged with felonious assault after the incident.
事件发生后，他因严重袭击被指控。
C2 noun /fɔːrˈbɛrəns/

forbearance

宽容
Meaning
Patient self-control; restraint and tolerance, especially in difficult situations.
Example
She showed remarkable forbearance during the heated argument.
她在激烈的争论中表现出了非凡的宽容。
C2 adjective /ˈfer.əs/

ferrous

含铁的
Meaning
containing or consisting of iron
Example
Ferrous metals are commonly used in construction.
铁金属常用于建筑中。
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。
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。
B1 adjective /ˈfluː.ənt/

Fluent

流利; 熟练
Meaning
able to speak a language easily and accurately; flowing smoothly and gracefully
Example
She is fluent in three languages including English and French.
她流利地讲三种语言，包括英语和法语。
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！
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。
B2 noun/verb /ˈfɒs.tər.ɪŋ/

fostering

培养
Meaning
The process of encouraging or promoting the development or growth of something; nurturing and caring for.
Example
Good teachers play a key role in fostering creativity in students.
好老师在促进学生创造力方面发挥着关键作用。
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 /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。
C2 noun /ˈfʌstɪən/

fustian

浮夸的演讲
Meaning
pompous or pretentious speech or writing; originally a type of thick cloth
Example
The politician's speech was filled with fustian and empty promises.
政治家的演讲充满了浮夸和空洞的承诺。
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 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。
C1 adjective /ˈfiːbl/

feeble

虚弱, 软弱
Meaning
lacking physical strength or vigor; weak
Example
After the illness, she felt too feeble to stand.
生病后，她感到太虚弱无法站立。
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。
C2 noun /ˈfɪlɪɡri/

filigree

精致的装饰工艺，通常由金或银制成
Meaning
delicate ornamental work of fine wire, usually of gold or silver
Example
The necklace was decorated with intricate gold filigree.
项链上装饰着精致的金质镶嵌工艺。
B2 verb /ˈflætər/

flatter

为了获得好处而过分或虚伪地赞扬
Meaning
to praise excessively or insincerely to gain favor
Example
He tried to flatter his boss to get a promotion.
他试图讨好他的老板以获得晋升。
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。
B1 noun /ˈfʌndɪŋ/

funding

资金
Meaning
financial support for a project or organization
Example
The startup is seeking funding from investors.
初创公司正在寻求投资者的资金支持。
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。
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。
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。
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 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。
C2 noun /ˈfetiʃ/

fetich

费蒂什
Meaning
an object believed to have magical powers or to be inhabited by a spirit
Example
The villagers treated the statue as a powerful fetich.
村民把雕像视为一个强大的费蒂什。
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。
A2 adjective /fer/

Fair

公正的; 合理的; 吸引人的
Meaning
just and reasonable; treating people equally; light in color; attractive
Example
The judge made a fair decision in the case.
法官在案件中做出了公正的决定。
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。
C1 adjective /flæmˈbɔɪənt/

flamboyant

华丽的、色彩斑斓的或自信的
Meaning
showy, strikingly bold or colorful; confident and lively
Example
His flamboyant style drew everyone's attention at the party.
他那华丽的风格吸引了派对上所有人的注意。
B1 noun /ˈfes.tə.vəl/

Festival

节日; 庆典;
Meaning
a day or period of celebration, typically for religious reasons; an organized series of concerts, films, etc.
Example
The music festival attracted thousands of visitors from around the world.
音乐节吸引了来自世界各地的成千上万的游客。
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。
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。
C1 adjective /fɪkˈtɪʃəs/

fictitious

虚构的, 假的
Meaning
not real or true; imaginary or fabricated
Example
The story he told was entirely fictitious.
他讲的故事完全是虚构的。
B2 noun ˈfreɪm.wɜːks

frameworks

框架
Meaning
A basic structure underlying a system, concept, or text; an essential supporting structure.
Example
Frameworks define the basis of systems.
框架定义了系统的基础。
C1 adjective /frəˈtɜːrnəl/

fraternal

Meaning
Relating to brothers or brotherhood; friendly and supportive.
Example
The two nations maintain a fraternal relationship.
C1 verb /ˈflɪk.ər/

flicker

闪烁
Meaning
to shine unsteadily or waver between light and dark
Example
The candle flickered in the wind.
蜡烛在风中闪烁。
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 adjective/adverb /feɪn/

fain

心甘情愿地, 乐意地
Meaning
gladly, willingly, or with pleasure
Example
I would fain help you if I had the time.
如果我有时间，我会很乐意帮你。
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。
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 /ˈflæt.ər.i/

Flattery

恭维
Meaning
excessive and insincere praise, given especially to further one's own interests
Example
His constant flattery made everyone suspicious of his true motives.
他不断的恭维使大家怀疑他的真实动机。
C1 noun, verb /ˈfɛrɪt/

ferret

雪貂, 坚持不懈地寻找或发现某物
Meaning
a small domesticated animal used for hunting; to search or uncover something persistently
Example
He ferreted out the hidden documents.
他发现了隐藏的文件。
C1 noun/adjective ˈflɛdʒ.lɪŋ

fledgling

初学者, 没有经验, 新成立的
Meaning
New, inexperienced, newly established.
Example
The fledgling startup needs investment.
这个新成立的公司需要投资。
C1 adverb /ˈfeɪ.təl.i/

Fatally

致命地
Meaning
in a way that causes death; with deadly consequences; critically
Example
The accident fatally injured two passengers.
事故致命地伤害了两名乘客。
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。
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 /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。
C2 noun /ˈfaɪər.brænd/

firebrand

煽动者
Meaning
a person who is passionate about a cause, often inciting change or action
Example
The activist was a true firebrand, inspiring everyone around him to join the protest.
这位活动家是真正的煽动者，激励着周围的每个人参加抗议。
C2 noun /fɪntʃ/

finch

雀鸟（小型歌唱鸟）
Meaning
a small songbird with a short, stout bill
Example
A colorful finch perched on the branch singing sweetly.
一只五彩斑斓的雀鸟栖息在树枝上，甜美地唱着歌。
C1 noun /ˈfɛtɪʃ/

fetish

过度或不理智的痴迷
Meaning
an excessive or irrational devotion to something
Example
He has a fetish for collecting rare stamps.
他对收集稀有邮票有着一种痴迷。
A1 verb /ˈfɒloʊ/

follow

跟随
Meaning
to move behind someone or something; to go after or come after
Example
The children followed their teacher into the classroom.
孩子们跟着老师进了教室。
C2 noun /ˈfrækɑː/

fracas

纷争
Meaning
A noisy disturbance or quarrel.
Example
The fracas outside the bar drew the attention of the police.
酒吧外的纷争引起了警察的注意。
C2 verb /ˈfrɪtər/

fritter

浪费
Meaning
To waste time, money, or energy on trivial matters.
Example
He frittered away his savings on unnecessary gadgets.
他把储蓄浪费在了不必要的电子产品上。
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 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。
C2 adjective /ˈfluːviəl/

fluvial

与河流相关
Meaning
relating to or found in a river
Example
The fluvial deposits indicated the presence of an ancient river system.
河流沉积物表明了古老河流系统的存在。
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。
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。
C1 noun /ˈfɔːr.teɪ/ or /fɔːrt/

forte

强项
Meaning
a strong ability or talent; something one does particularly well
Example
Cooking is definitely her forte.
做饭绝对是她的强项。
B2 adjective /ˌfʌndəˈmɛntl/

fundamental

Meaning
forming a necessary base or core; of central importance
Example
Honesty is a fundamental principle of good leadership.
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 adjective /ˈfɒksi/

foxy

狡猾
Meaning
Clever, cunning, or attractive.
Example
He came up with a foxy plan to win the game.
他想出了一个狡猾的计划来赢得比赛。
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。
B2 adjective /ˈfeɪθ.fəl/

Faithful

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。
C2 noun /fluː/

flue

烟道
Meaning
A pipe or channel for smoke and waste gases produced by a fire, gas heater, or power station.
Example
The chimney flue needs to be cleaned regularly.
烟囱的烟道需要定期清理。
A2 adjective /ˈfæstɪst/

fastest

最快的
Meaning
moving or capable of moving at the highest speed
Example
Usain Bolt is the fastest runner in the world.
尤塞恩·博尔特是世界上跑得最快的运动员。
A2 noun /fraɪd raɪs/

Fried rice

炒饭
Meaning
a dish of cooked rice that has been stir-fried in a wok or frying pan
Example
We ordered chicken fried rice from the Chinese restaurant.
我们从中国餐馆订了鸡肉炒饭。