forebode
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C2 verb /fɔːrˈboʊd/

forebode

预示
Meaning
To predict or have a strong inner feeling of a future misfortune or evil.
Example
Dark clouds forebode a coming storm.
乌云预示着即将到来的风暴。
B1 noun /ˈfɛloʊ/

fellow

伙伴
Meaning
a person who shares a common situation, interest, or activity with another
Example
He is a fellow student in my class.
他是我班上的一个伙伴。
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 /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 /ˈflaɪti/

flighty

不稳定
Meaning
unstable, impulsive, or easily distracted; lacking seriousness or stability
Example
She’s too flighty to stick with one job for long.
她太不稳定了，无法在一份工作上呆太长时间。
B2 verb ˈfɔːr.mjə.leɪt

formulate

制定
Meaning
To create or develop a plan or idea clearly and specifically, to construct an idea or strategy clearly.
Example
The company must formulate a strategy for expansion.
公司必须制定扩展策略。
A2 noun /frɒɡ/

Frog

青蛙
Meaning
a small amphibian animal that lives both in water and on land
Example
The frog jumped from the lily pad into the pond.
青蛙从睡莲叶上跳进池塘。
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。
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。
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。
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。
C1 adjective /ˈflaʊəri/

flowery

花哨的 / 装饰的
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
她写了一封充满诗意的花哨信。
B2 noun /faɪˈnæn.ʃəl rɪˌspɒn.sɪˈbɪl.ə.ti/

financial responsibility

财务责任
Meaning
The practice of managing money and other financial resources in a responsible and effective manner.
Example
Financial responsibility ensures long-term economic stability.
财务责任确保长期的经济稳定。
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。
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。
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。
C2 adjective /ˈfʌndʒəbl/

fungible

可替代的
Meaning
interchangeable; able to replace or be replaced by another identical item
Example
In finance, money is considered a fungible asset.
在金融领域，钱被视为一种可替代资产。
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。
A2 adverb /ˈfaɪ.nəl.i/

Finally

终于
Meaning
at last; after a long time; in the end; as the last point
Example
After years of hard work, she finally achieved her goal.
经过多年的努力工作，她终于达成了自己的目标。
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。
C2 adjective /ˈfɒp.ɪʃ/

Foppish

过度关注个人外貌和衣服；对穿着虚荣
Meaning
excessively concerned with one's appearance and clothes; vain about dress
Example
His foppish behavior and expensive clothes made him stand out.
他的foppish行为和昂贵的衣服使他与众不同。
C1 adjective /ˈfɜːrtɪv/

furtive

秘密的
Meaning
Attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble.
Example
He cast a furtive glance at the door before leaving.
他在离开前悄悄地看了一眼门。
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。
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.
C2 adjective/noun /fɪˈduː.ʃi.er.i/

fiduciary

信托的
Meaning
Involving trust, especially with regard to the relationship between a trustee and a beneficiary.
Example
Banks have fiduciary duties towards their clients.
银行对客户有信托责任。
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。
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。
C1 noun /frɪˈvɒləti/

frivolity

轻浮
Meaning
Lack of seriousness; silly or trivial behavior.
Example
The teacher discouraged frivolity during the exam.
老师在考试期间阻止了轻浮行为。
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 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。
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 /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。
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。
C2 noun /ˈfʌriər/

furrier

毛皮商人
Meaning
A person who prepares or deals in furs.
Example
The furrier displayed fine coats in his shop.
毛皮商人在他的店里展示了精美的大衣。
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。
C1 adjective /ˈfɜːr.vənt/

fervent

热情的，激情四射的
Meaning
having or showing intense passion or enthusiasm
Example
She gave a fervent speech about climate change.
她发表了关于气候变化的热情演讲。
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。
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。
A2 noun /ˈflaɪ.ɪŋ ˈkriː.tʃər/

Flying creature

会飞的生物
Meaning
any animal that has the ability to fly through the air
Example
Birds, bats, and insects are all examples of flying creatures.
鸟类、蝙蝠和昆虫是会飞的生物的例子。
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 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 /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。
C2 adjective /ˈfædɪʃ/

faddish

短暂的时尚
Meaning
Following a temporary trend or fashion
Example
Wearing neon clothes was a faddish style in the 1980s.
穿着霓虹服装在1980年代是一种时尚。
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。
A1 adjective /fʊl/

full

满
Meaning
Containing as much or as many as possible; complete.
Example
The glass is full of water.
杯子里满是水。
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。
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。
A2 verb /fərˈɡɪv/

forgive

原谅
Meaning
to stop feeling angry or resentful toward someone; to pardon
Example
She decided to forgive him for his mistakes.
她决定原谅他因为他的错误。
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。
A1 noun /faɪv/

five

五
Meaning
The number 5; one more than four and one less than six.
Example
She bought five apples from the market.
她从市场买了五个苹果。
B2 adjective /ˈfʌŋkʃənl/

functional

功能性
Meaning
designed to be practical and useful, rather than just decorative
Example
The design of the chair is simple but highly functional.
椅子的设计简单，但非常实用。
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。
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。
C1 adjective/noun /fəˈrɛns.ɪk/

forensic

应用于刑事或法律事务的科学分析
Meaning
Scientific analysis applied to criminal or legal matters
Example
Forensic experts analyze cybercrimes using advanced tools.
法医专家使用先进的工具分析网络犯罪。
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。
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。
C1 adjective /ˈfɪɡərətɪv/

figurative

比喻的
Meaning
not literal; using figures of speech or symbolic representation
Example
She used figurative language to describe her feelings.
她用比喻的语言来描述她的感受。
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。
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。
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。
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。
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 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。
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。
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。
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。
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。
C2 noun /ˌfrɪdʒɪˈdɛːriəm/

frigidarium

冷水池
Meaning
a large cold pool in ancient Roman baths used for cooling off after hot baths
Example
The ruins of the Roman frigidarium are still visible today.
罗马的冷水池遗址今天仍可见。
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。
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 verb /ˈfɪltər/

filter

过滤
Meaning
to pass a substance through a device to remove unwanted material or to selectively pass certain items
Example
She used a coffee filter to separate the grounds from the liquid.
她用咖啡过滤器将咖啡渣和液体分开。
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 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。
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。
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 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。
C1 noun /ˈfaɪərɑːm/

firearm

火器
Meaning
a weapon capable of firing a projectile using gunpowder or other propellant
Example
The police found a hidden firearm during the investigation.
警方在调查过程中发现了一支隐藏的火器。
B1 adjective /faɪˈnænʃəl/

financial

金融的
Meaning
relating to money, banking, or finance
Example
He made a sound financial decision by investing wisely.
他通过明智的投资做出了稳健的金融决策。
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。
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。
A1 noun/verb /fɪʃ/

fish

幸福
Meaning
an aquatic animal with gills, or to try to catch such animals
Example
He went to the lake to fish early in the morning.
她在得到奖项时无法掩饰她的快乐。
B2 noun/verb /flɑːk/

flock

群
Meaning
a group of birds or animals; to gather or move in a crowd
Example
Tourists flocked to the beach during summer.
游客们在夏天涌向海滩。
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。
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。
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。
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。
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。
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。
C1 noun /fəˈnætɪsɪzəm/

fanaticism

狂热
Meaning
the quality of being fanatical; extreme zeal or obsession
Example
Religious fanaticism can lead to intolerance and conflict.
宗教狂热可能导致不宽容和冲突。
B2 noun /ˈfjʊr.i/

Fury

狂怒或暴力愤怒;
Meaning
wild or violent anger; extreme intensity of emotion or activity
Example
His fury was evident when he discovered someone had stolen his bicycle.
当他发现有人偷走了他的自行车时，他的愤怒显而易见。
B1 adverb /ˈfriːkwəntli/

Frequently

频繁; 定期; 多次
Meaning
often; regularly; many times
Example
She frequently visits her grandmother on weekends.
她在周末经常探望她的祖母。
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。
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 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。
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。
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。
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。
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 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。
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。
C2 noun /ˈfɜːrlɔːŋ/

furlong

距离单位（220码或大约201米）
Meaning
a unit of distance equal to 220 yards or about 201 meters
Example
The horse ran a furlong before slowing down.
马跑了一个弗隆后才减速。
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。
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。
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。
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 /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 /fɪˈdjuːʃəl/

fiducial

信任的，作为参考标准的
Meaning
based on trust or confidence; serving as a standard of reference
Example
The fiducial point on the map ensures accurate measurements.
地图上的菲杜西亚尔点确保了精确的测量。
C2 adjective /ˈfʌŋɡəs/

fungous

像真菌一样
Meaning
relating to or resembling a fungus
Example
The damp basement had a fungous smell.
潮湿的地下室有一种像真菌一样的气味。
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 ˈfjuː.taɪl

futile

徒劳的
Meaning
Incapable of producing any useful result; pointless.
Example
His attempts to change the situation were futile.
他改变局势的努力是徒劳的。
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 /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。
A2 adjective, adverb /ˈfʊl taɪm/

full-time

全职
Meaning
working or studying for the whole standard period of time
Example
She works full-time as a teacher.
她作为老师全职工作。
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。
A2 adjective, adverb /ˈfæstər/

faster

更快
Meaning
moving or able to move quickly; more quickly than usual
Example
This car is faster than the old one.
这辆车比老车更快。
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。
C1 noun /ˈfjuː.dʒə.tɪv/

Fugitive

逃犯
Meaning
a person who has escaped from a place or is in hiding, especially to avoid arrest
Example
The police launched a manhunt to capture the fugitive who escaped from prison.
警方展开了追捕行动，试图抓捕从监狱逃跑的逃犯。
B2 adjective /ˈfeɪtl/

fatal

致命的
Meaning
causing death; leading to disaster
Example
The accident proved fatal for the driver.
事故对司机来说是致命的。
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。
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。