C1 noun /ˈfæk.ʃən/

Faction

派系

Meaning

a small organized dissenting group within a larger one

Example

Different factions within the party disagreed about the new policy.

党内的不同派系对新政策存在分歧。

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。

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 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 /ˈfɪʃ.ər/

fissure

裂缝

Meaning

a long, narrow opening or crack in a surface or object

Example

The earthquake caused a deep fissure in the road.

地震在路面上造成了一个深深的裂缝。

A2 noun/adjective /ˈfiːmeɪl/

female

雌性

Meaning

a person or animal of the sex that can bear offspring; relating to women or girls

Example

The female lion protects her cubs fiercely.

母狮保护她的幼崽。

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。

B2 adjective /ˈfɛdərəl/

federal

联邦的

Meaning

Relating to the central government of a federation.

Example

The federal government passed a new law on healthcare.

联邦政府通过了一项关于医疗保健的新法律。

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 /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。

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

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 noun /ˈfræk.ʃən/

Fraction

分数; 部分

Meaning

a numerical quantity that is not a whole number; a small or tiny part of something

Example

Only a small fraction of the population voted in the local election.

只有一小部分人口在当地选举中投票。

C1 noun /fɪˈnænʃɪər/

financier

金融家

Meaning

a person who manages large amounts of money or investments

Example

The financier advised the company on its investments.

金融家为公司提供了关于投资的建议。

C2 noun /ˈfrɛʃɪt/

freshet

突然的河流泛滥

Meaning

A sudden overflow of a stream or river caused by heavy rain or melting snow.

Example

After the storm, the river turned into a raging freshet.

暴风雨过后，河流变成了猛烈的freshet。

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 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。

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 /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 /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 /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。

C1 adverb /ˈfɪksɪdli/

Fixedly

专心地

Meaning

in a steady, unmoving manner; with intense concentration

Example

He stared fixedly at the painting.

他专心地盯着画作。

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。

A1 adjective /ˈfeɪ.məs/

famous

著名

Meaning

Known about by many people; renowned.

Example

This area is famous for its unique heritage.

这个地区因其独特的遗产而著名。

C1 adjective /ˌfʊl ˈbɒd.id/

full-bodied

口感浓烈

Meaning

Having a strong, rich, and robust quality, especially of wine, coffee, or voice.

Example

He prefers a full-bodied red wine with his dinner.

他喜欢与晚餐搭配的口感浓烈的红酒。

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。

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 /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。

B1 noun /ˈfɔːr.mæt/

Format

格式

Meaning

the way in which something is arranged or set out; the shape, size, and presentation of a book or document

Example

Please submit your report in PDF format by the end of the week.

请在本周末之前以PDF格式提交您的报告。

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。

A1 noun /ˈfæməli/

family

家庭

Meaning

A group consisting of parents and their children, or all the descendants of a common ancestor.

Example

She spends most of her weekends with her family.

她把大部分周末时间都和家人一起度过。

A2 adjective, noun /ˈfeɪvərɪt/

favorite

最喜欢的

Meaning

Preferred over all others; something or someone especially liked.

Example

Chocolate is my favorite ice cream flavor.

巧克力是我最喜欢的冰淇淋口味。

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。

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。

C1 adjective /ˈfaɪ.naɪt/

Finite

有限的; 有边界的

Meaning

limited; having bounds or limits; not infinite

Example

Earth has finite natural resources.

地球有有限的自然资源。

C2 noun /ˈfrɛs.koʊ/

fresco

壁画

Meaning

A painting done rapidly in watercolor on wet plaster so that the colors penetrate the surface

Example

The church walls were decorated with beautiful frescoes.

教堂的墙壁装饰着美丽的壁画。

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 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 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 /ˈflɪpənt/

flippant

轻浮的

Meaning

not showing a serious or respectful attitude

Example

His flippant remarks annoyed the teacher.

他轻浮的言论惹怒了老师。

C1 adjective /frɔːt/

fraught

充满

Meaning

Filled with or likely to result in something undesirable.

Example

The negotiations were fraught with tension and uncertainty.

谈判充满了紧张和不确定性。

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。

B2 adjective /ˈfæktʃuəl/

Factual

基于事实的; 真实的

Meaning

based on facts; accurate; true

Example

The report contains only factual information.

报告仅包含事实性的信息。

C1 adjective /ˈfrɪvələs/

frivolous

轻浮

Meaning

Not having any serious purpose or value; silly or unimportant.

Example

She dismissed the frivolous complaint quickly.

她迅速驳回了这个轻浮的投诉。

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。

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。

C1 noun /ˈfʊtˌnoʊt/

foot-note

脚注

Meaning

A note of reference, explanation, or comment placed at the bottom of a page.

Example

The author included a foot-note to explain the historical context.

作者加入了一个脚注，以解释历史背景。

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。

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。

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。

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。

B1 adjective /ˈfrʌstreɪtɪŋ/

frustrating

令人沮丧

Meaning

causing annoyance or dissatisfaction

Example

The slow internet connection was really frustrating.

缓慢的互联网连接真的令人沮丧。

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。

C1 verb /fɔːˈbɛər/

forbear

克制

Meaning

To refrain from doing something; to show patience or self-control.

Example

She forbore from commenting on his mistake.

她克制了对他错误的评论。

A2 adjective /faɪn/

Fine

好的; 极好的; 薄的; 纤细的; 高质量的

Meaning

good; excellent; thin; delicate; high quality

Example

The weather is fine today.

今天天气很好。

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。

B2 noun /feɪt/

Fate

命运

Meaning

the development of events beyond a person's control, regarded as determined by a supernatural power

Example

Many people believe that fate determines the course of their lives.

许多人相信命运决定了他们生活的轨迹。

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。

C1 noun /flæt fɪʃ/

Flat fish

比目鱼

Meaning

a type of fish with a flattened body that lives on the sea floor

Example

Flat fish like sole and flounder are excellent for grilling.

像鳎鱼和比目鱼这样的平鱼非常适合烤制。

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。

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。

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。

C1 noun /ˈfɔːrˌθɔːt/

forethought

预见

Meaning

careful consideration of what will be necessary or may happen in the future

Example

With a little forethought, we could have avoided the problem.

稍微有一点预见性，我们本可以避免这个问题。

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。

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。

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。

C1 noun /ˈfɔːrsəm/

foursome

四人组

Meaning

a group of four people or things, especially in games or social activities

Example

The foursome enjoyed a game of golf together.

四人组一起享受了一场高尔夫比赛。

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。

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。

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 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 /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。

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。

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 adjective fæsˈtɪd.i.əs

fastidious

挑剔的，讲究细节的

Meaning

Very attentive to and concerned about accuracy and detail.

Example

She is fastidious about maintaining cleanliness.

她在保持清洁方面非常讲究。

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。

A2 noun /ˈfæʃ.ən/

fashion

时尚

Meaning

a popular or accepted style of clothing, behavior, or way of doing something

Example

She always keeps up with the latest fashion.

她总是跟上最新的时尚。

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。

C1 noun ˌflʌk.tʃuˈeɪ.ʃən

fluctuation

波动

Meaning

An irregular rising and falling in number or amount; a variation.

Example

The stock market experiences frequent fluctuation.

股市经常经历波动。

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。

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。

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。

B1 adverb /ˈfɔːtʃənətli/

fortunately

幸运地

Meaning

by good luck; luckily

Example

Fortunately, no one was injured in the accident.

幸运地，事故中没有人受伤。

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。

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。

B2 noun /fɪst/

Fist

拳头; 拳击

Meaning

a person's hand when the fingers are bent in toward the palm and held there tightly

Example

He raised his fist in victory after winning the championship match.

他在赢得冠军比赛后举起了拳头。

B2 noun /fɛər/

fare

车费

Meaning

the money paid for a journey on public transport; also food or treatment provided

Example

The bus fare to the city center is five dollars.

到市中心的公交车费是五美元。

C1 verb /ˈfɔːlsɪfaɪ/

falsify

伪造

Meaning

to make something false or to misrepresent

Example

He tried to falsify the documents to avoid taxes.

他试图伪造文件以避免税收。

C2 verb /ˌfɔːrˈrʌn/

forerun

预示

Meaning

To go before; to precede in time, place, or action.

Example

Dark clouds often forerun a storm.

乌云常常预示着暴风雨。

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。

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。

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 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。

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。

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。

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 /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。

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。

A1 noun /frɛnd/

friend

朋友

Meaning

a person with whom one has a bond of mutual affection

Example

He is my best friend.

他是我最好的朋友。

B2 verb /fɔːrdʒ/

forge

锻造，伪造

Meaning

to create or shape something, often with effort or skill; also to counterfeit or fake something

Example

The blacksmith forged a strong sword from the iron.

铁匠从铁中锻造出一把坚固的剑。

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。

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。

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。

A2 number /ˈfɪfti/

fifty

五十

Meaning

the number 50

Example

The stadium can hold fifty thousand people.

体育场可以容纳五万人。

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。

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。

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。