fecundity
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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 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。
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 /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。
B2 noun ˈfrʌn.tɪərz

frontiers

边界
Meaning
The extreme limit of settled land beyond which lies wilderness; the limits of knowledge or achievement in a particular field.
Example
The project pushes the frontiers of space exploration.
这个项目推动了太空探索的边界。
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。
B1 noun flæɡz

flags

旗帜
Meaning
A piece of cloth or similar material, typically oblong or square, attachable by one edge to a pole or rope.
Example
The streets were decorated with national flags.
街道上装饰着国家旗帜。
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。
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。
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。
B2 noun /ˈfaʊn.tən/

Fountain

喷泉
Meaning
a natural spring of water; an artificial structure from which water flows
Example
The fountain in the park attracts many visitors.
公园里的喷泉吸引了许多游客。
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 /ˈfʌrəʊ/

furrow

Meaning
A long narrow trench made in the ground by a plow; to make wrinkles or grooves.
Example
The farmer plowed furrows in the field.
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 /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。
A1 noun /flɔːr/

floor

地板
Meaning
the lower surface of a room, on which one may walk
Example
The floor was covered with a soft carpet.
地板上铺着一块柔软的地毯。
B2 noun /ˈfɜː.tɪ.laɪ.zər/

fertilizer

肥料
Meaning
a substance added to soil to make plants grow more successfully
Example
Farmers use fertilizer to increase crop production.
农民使用肥料来提高作物产量。
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。
B2 adjective /ˈflɔː.ləs/

Flawless

完美的; 无缺陷
Meaning
perfect; without any defects or faults; immaculate
Example
Her flawless performance earned her a standing ovation.
她完美的表现为她赢得了全场起立的掌声。
B1 noun, verb /flæɡ/

flag

Meaning
a piece of fabric with a symbol or colors; or to mark or signal attention
Example
They raised the national flag during the ceremony.
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。
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.
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。
C1 noun /fəˌsɪlɪˈteɪʃən/

facilitation

便利化
Meaning
The action of facilitating or making an action or process easier or helping bring about an outcome.
Example
Her facilitation made the meeting run smoothly.
她的便利使会议顺利进行。
C1 noun/verb ˈfɒr.ɪdʒ

forage

饲料，寻找食物
Meaning
Food for horses and cattle, especially dried hay or feed; to search for food.
Example
Animals forage for food during the winter months.
动物们在冬季寻找食物。
B1 noun /ˈfæn.si/

Fancy

幻想; 幻觉或想象
Meaning
a feeling of liking or wanting something; imagination or fantasy
Example
The child had a fancy for becoming a famous astronaut when he grew up.
孩子长大后希望成为一名著名的宇航员。
C2 verb /ˈfrɪzəl/

frizzle

将食物炸至变脆并卷曲
Meaning
to fry something until it becomes crisp and curled, or to make a sizzling noise
Example
The bacon began to frizzle in the pan.
培根在锅中开始发出滋滋声。
C2 noun /ˈfɛndər/

fender

挡泥板
Meaning
a part of a vehicle that frames a wheel well to protect against mud or debris
Example
The car's fender was dented in the accident.
汽车的芬德尔在事故中被压凹了。
B2 verb /ˈfrʌsˌtreɪt/

frustrate

使沮丧
Meaning
to prevent from accomplishing; to make someone feel annoyed
Example
The traffic jam frustrated all the commuters.
交通堵塞让所有通勤者感到沮丧。
B2 noun fəˈtɪl.ɪ.ti

fertility

肥力
Meaning
The quality of being fertile; fruitfulness.
Example
Fertility of the soil is crucial for farming.
土壤的肥力对农业至关重要。
B2 noun /ˌfiː.ɑːnˈseɪ/

Fiancee

未婚妻
Meaning
a woman who is engaged to be married
Example
John bought a beautiful engagement ring for his fiancee.
约翰为他的未婚妻买了一枚漂亮的订婚戒指。
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。
A2 noun /fɪər/

Fear

恐惧; 害怕
Meaning
an unpleasant emotion caused by the belief that someone or something is dangerous
Example
She overcame her fear of heights by taking rock climbing lessons.
她通过参加攀岩课程克服了对高度的恐惧。
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。
B2 verb /flɪk/

flick

快速轻弹
Meaning
to move or cause to move with a sudden quick motion
Example
He flicked the switch to turn on the light.
他迅速地按下开关以打开灯。
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。
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。
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。
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。
C2 verb /ˈfʊl.mɪ.neɪt/

fulminate

猛烈抗议
Meaning
To express strong protest or criticism loudly and forcefully; to explode violently.
Example
The politician began to fulminate against corruption.
政治家开始猛烈反对腐败。
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。
A1 verb /feɪs/

face

mianlin
Meaning
to confront or deal with; to turn toward; to have the front in a particular direction
Example
She had to face many challenges in her new job.
Ta biyao mianlin hen duo tiaozhan zai ta de xin gongzuo zhong.
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。
C1 verb /fɔːrˈkloʊz/

foreclose

止赎
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
银行在错过几个月付款后决定没收财产。
C1 adjective /ˈfeɪl.seɪf/

fail-safe

故障保护
Meaning
designed to prevent failure or accidents; guaranteed to work correctly
Example
The engineers installed a fail-safe mechanism in the nuclear plant.
工程师在核电厂安装了故障保护机制。
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 /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。
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。
C2 noun /ˈflæt.ər.ər/

Flatterer

奉承者
Meaning
a person who lavishes praise, often insincerely and in order to gain advantage
Example
The king was surrounded by flatterers who only told him what he wanted to hear.
国王被奉承者围绕，他们只告诉他他想听的话。
C1 noun /ˌfɜːrmənˈteɪʃən/

fermentation

发酵，酵母或细菌的化学变化
Meaning
a chemical process by which substances like sugar are converted into alcohol or acids using microorganisms
Example
The fermentation of grapes produces wine.
葡萄的发酵产生葡萄酒。
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。
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。
A1 noun /ˈfɑːðər/

father

幸福
Meaning
A male parent of a child.
Example
His father taught him how to ride a bicycle.
她无法隐藏收到奖项时的快乐。
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。
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。
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

施肥
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
有机施肥有助于改善土壤健康。
B2 noun /fleʃ/

Flesh

肉
Meaning
the soft substance consisting of muscle and fat that is found between the skin and bones
Example
The doctor examined the wound to check if it had penetrated the flesh.
医生检查了伤口，看看它是否已经穿透了肉体
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 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。
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 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。
A2 noun /flaʊər/

Flour

面粉
Meaning
fine powder made by grinding wheat or other grains; used for making bread, cakes, and pastry
Example
She mixed flour with water to make dough for bread.
她把面粉和水混合，做了面包的面团。
C1 noun /ˈfænsiər/

fancier

爱好者
Meaning
a person who has a special interest in a particular thing or activity, especially animals or hobbies
Example
He is a fancier of rare birds.
他是稀有鸟类的爱好者。
C2 noun /flɔːˈrɛsəns/

florescence

开花期
Meaning
The process, state, or period of flowering.
Example
The garden reached its peak florescence in spring.
花园在春天达到了它的盛开时期。
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。
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。
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。
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。
A2 noun/verb /fɛns/

fence

篱笆
Meaning
a barrier, usually made of wood or wire, that surrounds an area; to enclose with a barrier
Example
They built a fence around the garden.
他们在花园周围建了一道篱笆。
C1 noun /ˈfoʊ.kəs ˈtræk.ɪŋ/

focus tracking

聚焦追踪
Meaning
A technique of monitoring and maintaining attention on specific tasks or goals.
Example
Proper focus tracking improves productivity.
适当的聚焦追踪可以提高生产力。
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。
A2 verb /fɪl/

fill

填充
Meaning
to make or become full; to put something into a container until it is full
Example
Please fill the glass with water.
请把玻璃杯装满水。
A2 noun /fɑːrm/

farm

农场
Meaning
an area of land used for growing crops and raising animals
Example
They live on a farm with many animals.
他们住在一个有许多动物的农场。
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 /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。
C1 noun /flʌks/

flux

流动
Meaning
continuous change or movement; the rate of flow of something
Example
The company was in a state of constant flux during the reorganization.
公司在重组期间处于持续变化的状态。
C1 adjective /ˌfɑːrˈfetʃt/

farfetched

不太可能或不太真实
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late sounded farfetched.
他解释迟到的理由听起来不可信。
B1 noun /ˈfʌŋkʃən/

function

功能
Meaning
An activity or purpose natural to or intended for a person or thing.
Example
The main function of the heart is to pump blood.
心脏的主要功能是泵送血液。
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。
C1 adjective /ˈfiːzəbl/

feasible

可行的
Meaning
possible to do easily or conveniently; practical and workable
Example
It is feasible to complete the project within two months.
在两个月内完成这个项目是可行的。
B1 noun /ˌfɜːrst eɪd kɪt/

first aid kit

急救箱
Meaning
A collection of medical supplies for giving initial treatment in emergencies
Example
I always keep a first aid kit in my car for emergencies.
我总是在车里备有急救箱以应对紧急情况。
C2 noun /friːz/

frieze

浮雕带
Meaning
a decorative horizontal band, often sculpted or painted, usually on a wall near the ceiling
Example
The frieze above the entrance depicts scenes from ancient mythology.
入口上方的浮雕带描绘了古代神话中的场景。
B2 noun /ˈfɔːr.hed/

Forehead

额头
Meaning
the part of the face above the eyebrows and below the hairline
Example
He wiped the sweat from his forehead.
他擦掉了额头上的汗水。
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。
B2 verb, adjective /ˈfɒstər/

foster

培养
Meaning
to encourage the development of something; to raise a child that is not one's own
Example
The program aims to foster creativity in young students.
该计划旨在促进年轻学生的创造力。
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。
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。
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 /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 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 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。
C1 adjective /ˈfiːlaɪn/

feline

猫的特征
Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
她的动作优雅，几乎像猫一样。
A2 noun, verb /fuːl/

fool

傻瓜
Meaning
a silly or stupid person; to trick someone
Example
He felt like a fool after believing the prank.
他在相信恶作剧之后觉得自己像个傻瓜。
B2 noun /ˈfɜːrneɪs/

furnace

炉子
Meaning
an enclosed structure in which heat is produced for a building or for melting metal
Example
The factory's furnace melted the metal quickly.
工厂的炉子迅速融化了金属。
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。
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。
C2 adjective /ˈfiːbraɪl/

febrile

发烧的，激动的
Meaning
having or showing the symptoms of a fever; or highly excitable or agitated
Example
The patient was in a febrile state with high temperature.
患者处于高温状态下的发烧状态。
B2 noun ˈfreɪm.wɜːk

framework

框架
Meaning
An essential supporting structure of a building, vehicle, or object; a basic structure underlying a system, concept, or text.
Example
A strong framework is vital for governance.
强大的框架对于治理至关重要。
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。
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。
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。
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。
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。
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。
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。
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。
B1 noun /feɪm/

Fame

名声
Meaning
the condition of being known or talked about by many people
Example
The young actor achieved international fame with his latest movie.
这位年轻演员凭借他最新的电影获得了国际声誉。
C1 noun /fɔːrˈmæl.ə.ti/

Formality

形式
Meaning
the rigid observance of rules of convention or etiquette; a thing done simply to comply with requirements
Example
The signing of the contract was just a formality; the deal was already agreed upon.
签署合同只是一个形式；交易已经达成。
C2 noun /ˈfʌŋkʃəˌnɛri/

functionary

职员
Meaning
a person who has official duties in an organization, especially one with little authority
Example
The minor functionary was responsible for filing reports.
次要的职员负责提交报告。
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。
B2 noun /ˌfer.ˈwel/

Farewell

告别
Meaning
an act of parting or of marking someone's departure
Example
The company organized a farewell party for the retiring manager.
公司为即将退休的经理举办了告别派对。
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。
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 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。
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。
C2 noun /ˈfoʊksl/

forecastle

船首舱
Meaning
The forward part of a ship below the deck, traditionally used as living quarters for the crew.
Example
The sailors gathered in the forecastle after their shift.
水手们在他们的班次结束后聚集在船首舱。
C2 adjective /ˈflæb.i/

Flabby

松软且松弛; 缺乏紧实或肌肉张力; 虚弱
Meaning
soft and loose; lacking firmness or muscle tone; weak
Example
His flabby arms showed he needed to exercise more.
他松弛的手臂显示他需要更多的锻炼。
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。
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。
B2 adverb /ˈflu:əntli/

Fluently

流利地; 顺畅地
Meaning
in a smooth, effortless, and articulate manner; with ease and skill
Example
She speaks French fluently.
她流利地讲法语。
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。