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A1 noun ˈfjuː.tʃər

future

未来
Meaning
The time or a period of time following the moment of speaking or writing; time regarded as still to come.
Example
Future projects depend on strategic planning.
未来的项目依赖于战略规划。
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。
C2 noun /ˈfɜːrðərəns/

furtherance

促进
Meaning
The advancement or promotion of something.
Example
The new policy was introduced in furtherance of social justice.
新政策是为了促进社会公正而引入的。
A2 noun ˈfɔːrɪsts

Forests

森林
Meaning
Large areas covered with trees and undergrowth, providing natural habitats for wildlife.
Example
Forests provide shelter and food for butterflies.
森林为蝴蝶提供庇护和食物。
C2 noun /ˈfɔːθ.raɪt.nəs/

forthrightness

直率
Meaning
The quality of being honest and straightforward; directness.
Example
Her forthrightness made her a respected journalist.
她的直率使她成为一名受人尊敬的记者。
C2 noun /ˌfoʊ.mənˈteɪ.ʃən/

fomentation

煽动，激起
Meaning
The action of instigating or stirring up; also the application of warm substances to the body to ease pain.
Example
His speech led to the fomentation of violence in the region.
他的演讲导致了该地区暴力的激化。
C2 adjective /ˈfɪt.fəl/

fitful

间歇性
Meaning
occurring in irregular bursts; not continuous or steady
Example
He had a fitful sleep due to the storm.
由于暴风雨，他有间歇性的睡眠。
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。
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 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。
C2 adjective /ˈflʌməksd/

flummoxed

困惑的
Meaning
Completely confused or bewildered.
Example
He looked flummoxed after hearing the strange question.
他听到那个奇怪的问题后，看起来很困惑。
B2 noun /fiːst/

Feast

盛宴; 宴会
Meaning
a large meal, typically one in celebration of something; an annual religious celebration
Example
The wedding feast included traditional dishes from both families' cultures.
婚礼盛宴包括了来自双方家庭文化的传统菜肴。
B2 noun /ˈfɔːrəm/

forum

论坛
Meaning
A place, meeting, or medium where ideas and views can be exchanged.
Example
The online forum allows people to discuss a wide range of topics.
在线论坛允许人们讨论广泛的主题。
A1 number /ˈfɔːrti/

forty

幸福
Meaning
the number 40; ten times four
Example
She celebrated her forty years of life with a big party.
当她收到奖项时，她无法掩饰自己的幸福。
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。
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 adverb /ˈfeɪθ.fəl.i/

Faithfully

忠诚地
Meaning
in a loyal and steadfast manner; with dedication
Example
She faithfully attended every meeting despite her busy schedule.
她忠实地参加了每一次会议，尽管她的日程非常紧张。
C1 adjective ˈflʌd proʊn

flood-prone

易受洪水影响
Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
孟加拉国是一个容易发生洪水的三角洲国家。
C1 noun /ˈfɛərˌɡraʊndz/

fairgrounds

集市场地
Meaning
A designated area where fairs, exhibitions, and amusement events are held
Example
The town set up rides and stalls at the fairgrounds for the annual festival.
小镇在集市场地设置了游乐设施和摊位，为年度节日做准备。
B1 adjective /ˈfɒɡi/

foggy

有雾的
Meaning
Full of or covered with fog; unclear or hazy.
Example
The mountain road was dangerous on the foggy morning.
山区的道路在这个雾蒙蒙的早晨非常危险。
C1 noun, verb /ˈfrænʧaɪz/

franchise

特许经营
Meaning
A legal right to sell or distribute goods or services in a specific area; to grant such a right.
Example
He opened a new fast-food franchise in the city.
他在城市里开设了一家新的快餐特许经营店。
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。
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。
A2 adjective /ˈfɔːrməl/

formal

正式
Meaning
done in accordance with rules of convention or etiquette; official or serious in nature
Example
He wore a formal suit to the wedding.
他在婚礼上穿了正式西装。
B1 noun /ˈfɔːr.tʃən/

Fortune

运气; 财富; 命运
Meaning
chance or luck as an external, arbitrary force affecting human affairs; a large amount of money or assets
Example
He made his fortune by investing wisely in technology companies.
他通过明智地投资科技公司赚到了财富。
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。
A2 verb /faɪt/

fight

战斗
Meaning
to engage in battle or combat; to struggle against
Example
The soldiers fight for their country.
士兵为他们的国家而战。
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。
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。
A2 adverb, adjective, verb, noun /ˈfɔːrwərd/

forward

向前
Meaning
toward the front; to advance or send ahead; an onward position or direction
Example
The troops moved forward to secure the bridge.
部队向前移动以确保桥梁的安全。
C1 noun fɔːlt ˈtɒl.ər.əns

fault-tolerance

容错性
Meaning
The ability of a system to continue operating properly in the event of the failure of some of its components.
Example
Fault-tolerance ensures dependable systems.
容错性确保了可靠的系统。
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。
C2 verb /ˈfɛstər/

fester

恶化, 加剧
Meaning
to become worse or more intense, often through neglect or infection
Example
If grievances are ignored, they may fester into resentment.
如果不理会抱怨，它们可能会变成怨恨。
C1 noun /faɪˈnælɪti/

finality

最终性
Meaning
the quality of being final or irreversible; a sense of conclusiveness
Example
The judge's decision gave the case a sense of finality.
法官的决定赋予案件一种最终性的感觉。
C2 noun /foʊl fʊt/

Foal-foot

马蹄花
Meaning
a yellow flowering plant with leaves shaped like a horse's hoof, also known as coltsfoot
Example
The foal-foot plant grows wild in many meadows and is often the first flower to bloom in spring.
马蹄花在许多草地上野生生长，通常是春天最早开花的花。
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。
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。
A1 preposition /frəm/ or /frʌm/

from

从
Meaning
Used to indicate the starting point of a journey, action, or source.
Example
She came from Dhaka to visit her family.
她从达卡来探望她的家人。
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。
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 adjective /fəˈɡɪv.ɪŋ/

Forgiving

宽容
Meaning
ready and willing to forgive; merciful; lenient
Example
She has a forgiving nature and rarely holds grudges.
她有宽容的天性，几乎不记仇。
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。
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。
C1 noun /ˈfɔːr.tɪ.tjuːd/

fortitude

坚韧
Meaning
Courage in pain or adversity; mental and emotional strength in facing difficulty.
Example
She faced adversity with great fortitude.
她以巨大的勇气面对困境。
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。
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。
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。
A2 noun /ˈfiːtʃər/

feature

特点
Meaning
a distinctive attribute or aspect of something; a characteristic
Example
The new phone has a unique camera feature.
新手机具有独特的相机特点。
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。
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。
C2 noun /ˈflɒtsəm/

flotsam

漂浮的残骸
Meaning
Floating debris from a shipwreck or things discarded and left floating.
Example
The beach was littered with flotsam after the storm.
暴风雨后，海滩上充满了漂浮的残骸。
B2 noun /flɛkˈsɪbɪləti/

flexibility

灵活性
Meaning
The quality of bending easily without breaking; willingness to change or compromise.
Example
The flexibility of the working hours made it easier to balance work and personal life.
工作时间的灵活性使得平衡工作和个人生活变得更加容易。
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 /flaʊt/

flout

蔑视
Meaning
To openly disregard or show contempt for a rule or law.
Example
The company was fined for flouting environmental regulations.
该公司因违反环保规定而被罚款。
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。
C1 noun /ˈfɔːrˌrʌnər/

forerunner

先驱
Meaning
A person or thing that comes before another; a predecessor or harbinger.
Example
The Wright brothers were the forerunners of modern aviation.
莱特兄弟是现代航空的先驱。
C2 adjective /ˈfʊl.səm/

fulsome

过度的赞美
Meaning
Excessively flattering or insincere; abundant or generous in amount.
Example
He offered fulsome praise to his boss.
他给老板提供了过度的赞美。
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。
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。
C1 noun /ˈfɔːrdʒər/

forger

伪造者
Meaning
a person who makes fake documents, artworks, or signatures
Example
The police arrested a forger who had been selling counterfeit paintings.
警方逮捕了一名伪造者，他一直在出售伪造的画作。
B1 adverb /ˈfɜːrstli/

firstly

首先
Meaning
used to introduce the first point or reason in a discussion or argument
Example
Firstly, we need to address the budget issue before proceeding.
首先，我们需要在继续之前解决预算问题。
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。
B2 adjective /fræŋk/

Frank

诚实的; 坦率的; 直率的; 真诚的
Meaning
honest; open; straightforward; candid
Example
She gave me a frank opinion about my presentation.
她对我的演讲给出了直率的意见。
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。
C1 noun /ˈfjuː.də.lɪ.zəm/

feudalism

封建主义
Meaning
the social system in medieval Europe in which people worked and fought for nobles who gave them protection and land in return
Example
Feudalism shaped the political structure of medieval Europe.
封建主义塑造了中世纪欧洲的政治结构。
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 noun /ˈfɪli/

filly

小母马
Meaning
a young female horse
Example
The filly ran swiftly across the meadow.
这匹小母马在草地上跑得很快。
C2 verb /feɪz/

faze

打扰
Meaning
to disturb or disconcert someone; to cause to feel unsettled
Example
She was not fazed by the unexpected question.
她没有被意外问题扰乱。
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 adjective, verb (present participle) /ˈfloʊtɪŋ/

floating

浮动
Meaning
remaining on the surface of a liquid without sinking; moving lightly or freely
Example
The boat was floating gently on the calm lake.
船在平静的湖面上轻轻浮动。
C2 noun /ˈfɔɪbəl/

foible

小缺点
Meaning
A minor weakness or eccentricity in someone's character.
Example
She loved him despite his little foibles.
尽管有一些小缺点，她依然爱他。
C2 noun /ˈfɒpəri/

foppery

浮夸
Meaning
Foolish or excessive concern with one's appearance or manners; pretentious behavior.
Example
His obsession with fashion was dismissed as mere foppery.
他对时尚的痴迷被当作浮夸。
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。
C2 noun ˌfjuːmɪˈɡeɪʃən

fumigation

熏蒸
Meaning
The practice of disinfecting or purifying an area using gas or smoke.
Example
Fumigation is an effective method to control pest infestations.
熏蒸是一种有效的控制害虫侵扰的方法。
B1 adjective /ˈfæbjələs/

Fabulous

极好的；不可思议的；非凡的
Meaning
extremely good; wonderful; extraordinary
Example
She wore a fabulous dress to the party.
她穿了一件精彩的裙子去参加派对。
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。
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.
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。
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。
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。
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 adjective /ˌfjuːtʃəˈrɪstɪk/

futuristic

未来主义的
Meaning
Having or involving very modern technology or design that is advanced beyond what is currently available
Example
Futuristic technologies are transforming industries worldwide.
未来主义技术正在改变全球的行业。
C1 verb /fɔːrˈɡoʊ/

forego

放弃
Meaning
to decide not to do or have something pleasant or valuable
Example
She decided to forego dessert to maintain her diet.
她决定放弃甜点，以保持她的饮食。
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。
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 /ˈfɔːrˌbɛər/

forebear

祖先
Meaning
An ancestor, especially one who lived a long time ago.
Example
He often speaks of his forebears with great respect.
他常常带着极大的敬意谈论他的祖先。
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 /fɔːrˈmeɪʃən/

formation

形成
Meaning
the action of forming or process of being formed
Example
The formation of the new company took several months.
新公司的形成花了几个月时间。
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 verb /ˈfrɒlɪk/

frolic

欢快地玩耍
Meaning
to play and move about cheerfully, energetically, or playfully
Example
The children frolicked in the garden all afternoon.
孩子们整个下午在花园里欢快地玩耍。
C2 noun /ˈfɔːrˌseɪl/

foresail

前帆
Meaning
The principal sail set on the foremast of a sailing vessel.
Example
The crew adjusted the foresail to catch the wind.
船员调整了前帆来迎接风。
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。
A1 noun/verb /fɪlm/

film

电影
Meaning
a motion picture or movie; or to record on camera
Example
They watched a film together on the weekend.
他们在周末一起观看了一部电影。
C2 verb /ˈfʌdəl/

fuddle

使困惑
Meaning
To confuse or stupefy, especially with alcohol or overwhelming information.
Example
The complicated instructions fuddled the new employees.
复杂的指令使新员工感到困惑。
C1 adjective /fəˈroʊ.ʃəs/

Ferocious

凶猛，残忍，激烈
Meaning
savagely fierce, cruel, or violent; extremely aggressive
Example
The ferocious storm destroyed many houses in the coastal area.
凶猛的暴风摧毁了沿海地区的许多房屋。
A2 adjective /ˈfuː.lɪʃ/

Foolish

愚蠢的; 傻的; 可笑的
Meaning
lacking good sense or judgment; unwise; silly
Example
It was foolish of him to drive in such heavy rain.
在这样的暴雨中开车真是愚蠢。
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 verb /flɪntʃ/

flinch

退缩
Meaning
to suddenly move back or away due to fear or pain
Example
He didn’t flinch when the doctor gave him the injection.
他在医生给他打针时没有退缩。
C1 noun /fɔːn/

Fawn

小鹿
Meaning
a young deer; a light yellowish-brown color
Example
The mother deer protects her fawn from predators.
母鹿保护她的小鹿免受掠食者的伤害。
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。
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。
B2 noun /ˈfɪŋ.ɡər.prɪnt/

Fingerprint

指纹
Meaning
an impression or mark made on a surface by a person's fingertip; unique identification pattern
Example
The police found his fingerprints on the door handle at the crime scene.
警方在犯罪现场的门把手上找到了他的指纹。
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。
C1 noun /fɔːrˈkloʊʒər/

foreclosure

止赎
Meaning
The legal process by which a lender takes control of a property from a borrower who has failed to make payments.
Example
The family lost their home due to foreclosure after missing several mortgage payments.
这家人由于未支付多次按揭贷款而在止赎过程中失去了他们的家。
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。
B2 noun /ˈfɒsɪl/

fossil

化石
Meaning
the remains or impression of a prehistoric plant or animal embedded in rock
Example
The fossil of a dinosaur was discovered in the mountains.
在山中发现了一只恐龙化石。
C1 noun /fɪˈnɛs/

finesse

精妙, 技巧, 高雅
Meaning
Subtlety and skill; refinement and delicacy in performance or artistry.
Example
The artist painted with great finesse.
艺术家以极高的精妙感画画。
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 /fɔːrˈseɪk/

forsake

Meaning
to abandon or give up something or someone
Example
He decided not to forsake his old friends despite his success.
B2 adjective /ˈfruːt.fəl/

Fruitful

富有成效的; 有益的; 成功的;
Meaning
productive; beneficial; successful;
Example
Our discussion was very fruitful and led to many new ideas.
我们的讨论非常有成效，带来了许多新的想法。
A2 noun /ˈfæktəri/

factory

工厂
Meaning
A building or group of buildings where goods are manufactured.
Example
He works in a shoe factory.
他在一家鞋厂工作。
C1 adjective /fəˈnætɪkəl/

fanatical

狂热的
Meaning
showing extreme enthusiasm or obsession
Example
She has a fanatical interest in collecting vintage stamps.
她对收藏老式邮票有着狂热的兴趣。
B2 noun /ˈfækəlti/

faculty

能力, 系
Meaning
an inherent mental or physical ability; a division of a university
Example
She has a remarkable faculty for languages.
她有惊人的语言能力。
C2 noun /ˌfjuːzɪˈleɪd/

fusillade

齐射
Meaning
A series of shots fired or missiles thrown all at the same time or in quick succession.
Example
The soldiers advanced under a fusillade of bullets.
士兵们在一阵齐射下前进。
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。
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。
A2 adjective /ˈflaɪɪŋ/

flying

飞行的
Meaning
able to move through the air; related to flight or aircraft
Example
The flying bird disappeared into the clouds.
那只飞行的鸟消失在云中。
B1 noun /fæts/

fats

脂肪
Meaning
Essential macronutrients that provide energy, support cell growth, and protect organs while helping absorb vitamins.
Example
Healthy fats from nuts and avocados support brain function.
来自坚果和鳄梨的健康脂肪支持大脑功能。
A2 verb ˈfoʊkəs

focus

集中
Meaning
To concentrate attention or effort on something; to direct one's attention or efforts towards a particular activity, subject, or problem.
Example
Focus on what truly matters to simplify your life.
专注于真正重要的事情，让生活变得更简单。
C1 adjective /ˈfrɪdʒɪd/

Frigid

寒冷的; 冰冻的
Meaning
extremely cold; freezing; icy
Example
The frigid weather made it difficult to go outside.
寒冷的天气让出去变得困难。
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。