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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。
C1 noun /ˌfɪɡjʊˈriːn/

figurine

小型装饰雕像
Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
她买了一尊舞蹈芭蕾舞者的瓷雕像。
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。
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。
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。
B2 noun /ˈfræɡ.mənt/

Fragment

碎片; 片段;
Meaning
a small part broken or separated off something; an incomplete or isolated portion
Example
Archaeologists found fragments of ancient pottery buried in the soil.
考古学家在土壤中发现了古代陶器的碎片。
C1 noun /ˈfɔː.nə/

fauna

特定地区的动物生命
Meaning
The animal life of a particular region, habitat, or geological period.
Example
The fauna of the African savannah includes lions and elephants.
非洲草原的动植物群包括狮子和大象。
C2 noun /ˈfæn.feər/

fanfare

盛大场面, 宣传
Meaning
a short ceremonial tune or display of publicity to attract attention
Example
The new product was launched with much fanfare.
新产品在盛大场面下发布。
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/verb /ˈfɪʃɪŋ/

fishing

钓鱼
Meaning
the activity of catching fish
Example
Fishing is a popular activity in coastal villages.
捕鱼是沿海村庄中流行的活动。
B2 noun /fʌs/

Fuss

大惊小怪；无谓的烦恼
Meaning
unnecessary worry or bother about something; agitated excitement over a trivial matter
Example
She made such a fuss about the small stain on her dress that everyone noticed.
她因裙子上的小污点而大惊小怪，结果大家都注意到了。
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 /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。
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。
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 /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。
C2 verb /fɪˈlɪsɪˌteɪt/

felicitate

庆祝
Meaning
to congratulate; to express good wishes
Example
We felicitated the graduating students at the ceremony.
我们在典礼上祝贺了毕业生。
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。
C2 noun /ˈfɔːrkɔːrt/

forecourt

前庭
Meaning
an open area in front of a large building, especially a petrol station or hotel
Example
The car was parked in the hotel forecourt.
车停在酒店的前庭里。
A2 noun /ˈfɪɡ.jər/

Figure

数字; 形象; 数量;
Meaning
a number, especially one which forms part of official statistics; the shape of a human body
Example
The sales figure for this quarter exceeded all expectations.
这个季度的销售数字超过了所有的预期。
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。
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。
B2 verb /fɔːrˈsiː/

foresee

预见
Meaning
To be aware of beforehand; to predict or expect.
Example
She could foresee the challenges ahead.
她能够预见到前方的挑战。
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 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。
A1 preposition /fɔːr/

for

为
Meaning
used to indicate purpose, destination, or recipient
Example
This gift is for you.
这个礼物是给你的。
C1 verb /ˈfɜːrmɛnt/

ferment

经历一个化学过程，其中糖分转化为酒精或酸; 激起或引发变化
Meaning
to undergo a chemical process where sugars are converted to alcohol or acid; to incite or stir up change
Example
The grapes are left to ferment for several weeks.
葡萄被留下来发酵几个星期。
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。
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。
C1 noun /ˈfreɪlti/

frailty

脆弱
Meaning
The condition of being weak, delicate, or easily broken.
Example
Old age often comes with physical frailty.
衰老通常伴随着身体的脆弱。
C2 adjective /fəˈlɪsɪtəs/

felicitous

恰当的, 合适的或令人愉快的; 由好运或幸福标志
Meaning
well-chosen, appropriate, or pleasing; marked by good fortune or happiness
Example
She made a felicitous remark that lightened the mood.
她做了一个恰到好处的评论，使气氛轻松了。
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。
C2 adjective /fjuːˈnɪəriəl/

funereal

葬礼的
Meaning
having the mournful, somber character of a funeral
Example
The room was filled with a funereal silence after the announcement.
宣布后，房间里充满了葬礼般的沉默。
B1 noun fəˈsɪl.ɪ.tiz

facilities

设施
Meaning
A place, amenity, or piece of equipment provided for a particular purpose.
Example
Facilities improve industrial productivity.
设施提高了工业生产力。
C1 noun/adjective /fɔːrˈboʊdɪŋ/

foreboding

不祥的预感
Meaning
A feeling that something bad will happen; ominous.
Example
She felt a deep sense of foreboding as she entered the abandoned house.
她走进那座废弃的房子时，感到一种深深的不祥预感。
A1 adjective /ˈfrɛndli/

friendly

幸福
Meaning
Kind and pleasant; showing goodwill and affection.
Example
The shop owner is very friendly to new customers.
她收到奖项时无法掩饰自己的幸福。
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。
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。
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。
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 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 noun /ˈfer.i boʊt/

Ferry-boat

渡船
Meaning
a boat that carries passengers and vehicles across water
Example
We took the ferry-boat to cross the river.
我们坐渡船过河。
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 /ˈfɪɡmənt/

figment

虚构，想象
Meaning
something invented or imaginary; a fabrication of the mind
Example
The story of the haunted house is just a figment of her imagination.
鬼屋的故事只是她想象的产物。
B2 verb /fliː/

flee

逃跑
Meaning
To run away from danger or a threatening situation.
Example
The villagers had to flee during the flood.
村民们在洪水期间不得不逃离。
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。
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。
C2 noun /ˌfɔːrɔːrdɪˈneɪʃən/

foreordination

预定
Meaning
the act of determining something in advance; predestination
Example
The doctrine of foreordination suggests that events are fixed by divine will.
预定论教义认为，事件是由神的意志所决定的。
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。
A2 noun /fluː/

flu

流感
Meaning
a contagious viral illness causing fever, aches, and respiratory symptoms; influenza
Example
She stayed home because she had the flu.
她因为得了流感待在家里。
C1 verb /ˈfɔːltər/

falter

犹豫或失去力量或动力
Meaning
to hesitate or lose strength or momentum
Example
Her voice faltered as she delivered the speech.
她的声音在演讲时颤抖。
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。
B1 adjective /ˈfriːkwənt/

Frequent

频繁
Meaning
happening often; occurring regularly; repeated
Example
He makes frequent visits to his grandmother.
他经常去看望他的祖母。
C1 adjective /ˈflʌstərd/

flustered

困惑
Meaning
in a state of confusion or agitation
Example
She appeared flustered after being asked so many questions.
她在被问了那么多问题后，看起来有些困惑。
B1 noun /ˌfɜːrst ˈeɪd/

first aid

急救
Meaning
Immediate assistance given to a sick or injured person until full medical treatment is available
Example
He gave first aid to the injured cyclist before the ambulance arrived.
在救护车到来之前，他为受伤的自行车手进行了急救。
B2 adjective /ˈfɜːr.taɪl/

Fertile

肥沃的
Meaning
capable of producing abundant vegetation or crops; able to conceive children
Example
The fertile soil in this region makes it perfect for growing vegetables.
这个地区的肥沃土壤使其成为种植蔬菜的理想之地。
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。
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 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。
B2 noun fəˈtiːɡ

fatigue

疲劳
Meaning
Physical or mental exhaustion due to prolonged exertion or mental stress
Example
Lack of sleep leads to extreme fatigue.
缺乏睡眠会导致极度疲劳。
C2 noun /ˈfriːˌmeɪsən/

freemason

共济会会员
Meaning
A member of an international fraternity known as Freemasonry, focused on moral and spiritual values.
Example
His grandfather was a respected freemason in the community.
他的祖父是社区中受人尊敬的共济会会员。
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。
B2 verb /ˈfæsən/

fasten

系紧
Meaning
To attach or secure something firmly in place
Example
Please fasten your seatbelt before the plane takes off.
请在飞机起飞前系好安全带。
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。
A2 noun /ˈfɑː.loʊ.ɪŋ/

following

追随者
Meaning
a group of supporters or people who admire something or someone
Example
The singer has a large following around the world.
这位歌手在全世界有很多追随者。
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 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。
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 adjective /ˈflæs.ɪd/

Flaccid

软弱的; 无力的; 松弛的;
Meaning
soft and limp; lacking firmness; drooping
Example
The plant's leaves became flaccid after days without water.
在没有水的几天后，植物的叶子变得软弱无力。
C1 adjective /ˈfɪs.kəl/

fiscal

财政的
Meaning
Relating to government revenue, especially taxes, or public money management.
Example
The government introduced new fiscal policies to control inflation.
政府推出了新的财政政策来控制通货膨胀。
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。
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。
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。
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 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。
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 noun /fez/

Fez

费兹帽
Meaning
a cone-shaped red hat with a tassel, traditionally worn by men in some Middle Eastern countries
Example
The traditional costume included a red fez with a black tassel.
传统服饰包括一顶红色的费兹帽和一个黑色的流苏。
B2 verb fəˈsɪl.ɪ.teɪt

facilitate

促进
Meaning
Make an action or process easier or more achievable; to help bring about.
Example
Good infrastructure facilitates economic growth.
良好的基础设施促进经济增长。
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。
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 noun ˌfɔːtɪfɪˈkeɪʃn

fortification

防御工事
Meaning
A defensive wall or other reinforcement built to strengthen a place against attack.
Example
The fortifications protected the city.
防御工事保护了城市。
B2 verb /ˈflʌrɪʃ/

flourish

Meaning
To grow or develop in a healthy or successful way.
Example
Her business began to flourish after she introduced online sales.
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。
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！
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 /ˈfɔːrˌbɛərz/

forebears

祖先
Meaning
Ancestors or people in previous generations from whom one is descended.
Example
We must honor the traditions of our forebears.
我们必须尊重我们祖先的传统。
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。
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。
C1 adjective /ˈfɪk.əl/

Fickle

多变的; 不稳定的; 善变的;
Meaning
changeable; inconstant; liable to sudden unpredictable change
Example
His fickle nature made it hard to trust his promises.
他那多变的个性使得信任他的承诺变得困难。
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。
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。
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。
B2 verb /feɪd/

fade

褪色
Meaning
To gradually lose brightness, color, or strength.
Example
The colors of the old photo have started to fade.
老照片的颜色开始褪色。
C2 noun /ˈfræŋkɪnsɛns/

frankincense

乳香
Meaning
An aromatic gum resin used in incense and perfumes, often in religious ceremonies.
Example
The temple was filled with the sweet smell of burning frankincense.
寺庙里充满了燃烧乳香的甜美气味。
C2 noun /ˈfjʊr.ʌŋ.kəl/

Furuncle

脓肿; 坑;
Meaning
a painful pus-filled bump under the skin caused by infected, inflamed hair follicles
Example
The doctor prescribed antibiotics to treat the painful furuncle on his neck.
医生开了抗生素来治疗他脖子上疼痛的脓肿。
B2 adjective /ˈfjʊə.ri.əs/

Furious

愤怒的; 激烈的; 暴力的;
Meaning
extremely angry; violent; fierce;
Example
She was furious when she discovered the mistake.
她发现错误时非常愤怒。
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。
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。
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。
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。
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 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 /ˈfruː.ɡəl/

Frugal

节俭; 经济
Meaning
economical; thrifty;
Example
She is very frugal and saves money by buying only necessary items.
她非常节俭，通过只购买必要的物品来节省钱。
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。
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。
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。
B2 noun /ˈfriːdəm ˌfaɪtər/

freedom fighter

自由斗士
Meaning
a person who takes part in an armed or political struggle to achieve freedom or independence for their people or country
Example
The freedom fighter dedicated his life to the liberation of his homeland.
这位自由斗士把一生献给了祖国的解放。
B1 noun /ˈfæktər/

factor

因素
Meaning
A circumstance, fact, or influence that contributes to a result.
Example
Weather is an important factor in crop production.
天气是作物生产中的一个重要因素。
A1 noun /fruːt/

fruit

水果
Meaning
The sweet and fleshy product of a plant that contains seeds.
Example
Mango is my favorite fruit.
芒果是我最喜欢的水果。
A1 noun /fuːd/

food

食物
Meaning
any nutritious substance that people or animals eat or drink to maintain life and growth
Example
Rice is a common food in Asia.
米饭是亚洲常见的食物。
B1 noun fləʊ

flow

流动
Meaning
The action or fact of moving along in a steady, continuous stream
Example
The flow of information must be secured.
信息流必须被确保。
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。
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。
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。
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。
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。
B1 adjective /ˈflek.sə.bəl/

Flexible

灵活的；容易适应的
Meaning
able to bend easily; adaptable to change; not rigid
Example
She has a flexible work schedule that allows her to work from home.
她有一个灵活的工作时间表，允许她在家工作。
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 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。
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。
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。