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A2 noun /ˈbæskɪt/

basket

篮子
Meaning
a container made of woven materials used for carrying or storing things
Example
She carried the apples in a basket.
她把苹果放在篮子里。
C2 verb /bɪˈsmɪər/

besmear

弄脏
Meaning
to smear or cover with a sticky or dirty substance; to soil
Example
His clothes were besmeared with mud.
他的衣服沾满了泥巴。
A2 noun /biː/

Bee

蜜蜂
Meaning
a flying insect that produces honey and can sting
Example
The bee collected nectar from the flower.
蜜蜂从花朵中采集了花蜜。
C1 noun /blæk sɔːlt/

Black Salt

黑盐
Meaning
a type of rock salt with a distinctive sulfuric flavor, commonly used in Indian cuisine
Example
Add a pinch of black salt to enhance the flavor of the fruit salad.
加入一撮黑盐以提升水果沙拉的风味。
C2 noun /ˈbɑːrtərər/

barterer

易货商
Meaning
A person who trades goods or services without using money.
Example
The barterer exchanged fruits for some pottery.
易货商用水果交换了一些陶器。
B2 verb /ˈbænɪʃ/

banish

放逐
Meaning
to send someone away from a place as punishment; to get rid of
Example
The king banished the traitor from the kingdom.
国王将叛徒赶出了王国。
B1 verb /bliːd/

bleed

流血
Meaning
to lose blood from the body, especially due to injury
Example
She began to bleed from the cut on her arm.
她开始从她手臂上的割伤出血。
C2 noun /ˈbrɛviˌɛri/

breviary

祷告书
Meaning
A book containing the service for each day, used in Christian liturgy.
Example
The monk read from the breviary during morning prayers.
僧侣在早晨祷告时从祷告书中朗读。
C1 verb /bɔːk/

balk

拒绝
Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
她犹豫着没有完全阅读合同就签署了。
A2 noun /ˈbʌt.ər.flaɪ/

Butter-fly

蝴蝶
Meaning
a flying insect with large colorful wings
Example
The beautiful butterfly landed on the flower.
美丽的蝴蝶停在花朵上。
B2 noun /biːd/

Bead

珠子
Meaning
a small round object with a hole through it for threading
Example
She made a necklace with colorful beads.
她用彩色的珠子做了项链。
C1 noun /ˈbɪɡətri/

bigotry

偏执
Meaning
Intolerance toward those who hold different opinions or lifestyles.
Example
Her bigotry prevented her from accepting people with different beliefs.
她的偏执阻止她接受拥有不同信仰的人。
A1 noun /bəˈnæn.ə/

Banana

香蕉
Meaning
a long curved fruit with yellow skin and soft sweet flesh
Example
Bananas are a good source of potassium.
香蕉是钾的良好来源。
B2 noun /braʊ/

brow

额头
Meaning
the part of the face above the eyes; forehead
Example
She wiped the sweat from her brow.
她擦去了额头上的汗水。
A2 noun /blʌd/

Blood

血液
Meaning
the red liquid that circulates in the arteries and veins of humans and animals, carrying oxygen to and carbon dioxide from the tissues of the body
Example
The doctor took a blood sample for testing.
医生取了一个血样进行测试。
B2 noun ˈbleɪzə

blazer

西装外套
Meaning
A coloured jacket worn by members of a club, team, or school as part of a uniform.
Example
He looked sharp in his navy blue blazer at the event.
他在活动中穿着海军蓝色的西装外套，看起来很时尚。
C2 verb /bɪˈstraɪd/

bestride

跨越
Meaning
To sit or stand astride something; to dominate over.
Example
The statue bestrides the city square.
这座雕像横跨城市广场。
B2 noun /ˈblɒkˌtʃeɪn/

blockchain

区块链
Meaning
A system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system
Example
Blockchain technology ensures transparency in financial transactions.
区块链技术确保金融交易的透明度。
A1 noun /boʊt/

Boat

小船
Meaning
a small vessel for traveling over water
Example
We took a small boat to cross the river.
我们乘坐小船渡过了河流。
C1 preposition /ˈbɑːrɪŋ/

barring

除非，除了
Meaning
except for; if not for
Example
Barring a miracle, the team will not win the championship.
除非有奇迹发生，否则团队将无法赢得冠军。
A2 noun /ˈbætəri/

battery

电池
Meaning
A device that stores and provides electrical energy; also refers to a group of similar things or repeated blows.
Example
The phone battery ran out after a long day.
手机电池在长时间使用后耗尽了。
C2 noun /ˈbiːlaɪn/

beeline

直线
Meaning
a straight, direct route to a destination
Example
He made a beeline for the food table as soon as he entered the party.
他一进派对就直奔餐桌。
C2 noun /bɛl/

belle

美丽的女人
Meaning
A beautiful woman, especially the most attractive woman at a gathering.
Example
She was the belle of the ball that evening.
她是那个晚上舞会的美丽女士。
C1 noun /bəˈbuːn/

Baboon

狒狒
Meaning
a large African and Arabian primate with a dog-like snout and colorful buttocks
Example
The baboon troop gathered around the watering hole in the savanna.
狒狒群聚集在大草原的水坑旁。
C1 adjective /ˈbækˌhændɪd/

backhanded

间接或讽刺的
Meaning
Indirect or sarcastic, often appearing as praise but actually insulting.
Example
She gave him a backhanded compliment about his work.
她给了他一个间接的赞美，关于他的工作。
B2 noun ˈbreɪk.θruː

breakthrough

突破
Meaning
A sudden, dramatic, and important discovery or development.
Example
The breakthrough opens doors for new technology.
这个突破为新技术打开了大门。
B1 noun /ˈbækʌp/

backup

备份
Meaning
a copy of data stored separately to protect against loss
Example
Make sure to have a backup of your important files.
确保备份您的重要文件。
B2 noun/verb /bruːz/

bruise

Meaning
As a noun: an injury appearing as a purple or blue mark on the skin; As a verb: to injure without breaking the skin
Example
He got a bruise on his arm after falling.
A2 verb /bɪˈlɒŋ/

belong

属于
Meaning
to be in the right place or to be a member of a group
Example
She felt she truly belonged to the team.
她觉得她真的属于这个团队。
B2 noun /bʌlk/

Bulk

大宗; 大部分;
Meaning
the mass or size of something large; the greater part or majority of something
Example
The bulk of the work was completed before the deadline.
大部分工作在最后期限前完成。
A2 verb /bleɪm/

blame

责怪
Meaning
to hold responsible for a fault; to find fault with
Example
Don't blame me for the mistake.
别把错误怪在我身上。
B1 noun /bɪˈheɪvjər/

behavior

行为
Meaning
The way in which one acts or conducts oneself, especially toward others.
Example
The teacher praised her good behavior in class.
老师表扬了她在课堂上的良好行为。
A2 verb /ˈbɑroʊ/

borrow

借
Meaning
to take temporarily with intention to return; to take on loan
Example
Can I borrow your pen for a moment?
我可以借一下你的笔吗？
B2 noun /beɪ/

Bay

海湾
Meaning
a broad inlet of the sea where the land curves inward
Example
The boats are anchored in the bay.
船只停泊在海湾。
C2 adjective /ˈbɑː.bər.əs/

Barbarous

野蛮; 残忍; 野生
Meaning
extremely cruel; uncivilized; savage
Example
The barbarous treatment of prisoners was condemned by human rights organizations.
对囚犯的野蛮待遇受到了人权组织的谴责。
C1 noun/adjective/verb /bʌf/

buff

影迷 / 打磨
Meaning
A fan or enthusiast; also to polish or shine something.
Example
He is a movie buff who watches films every weekend.
他是一个电影迷，每个周末都看电影。
B2 noun /ˈbɜːrdn/

burden

负担
Meaning
a heavy load, especially one that is difficult to carry
Example
The financial burden was too heavy for him to bear.
财政负担对他来说太重了。
B1 noun /biːst/

Beast

野兽
Meaning
a large or dangerous animal; a cruel or unpleasant person
Example
The lion is a fierce beast of the jungle.
狮子是丛林中凶猛的野兽。
C2 noun /ˈbrɪɡ.ənd/

brigand

强盗
Meaning
A member of a gang that ambushes and robs people in forests or mountains; a bandit.
Example
The travelers were attacked by brigands in the mountains.
旅行者在山中被强盗袭击。
B2 adverb /ˈbrɔːdli/

broadly

广泛地
Meaning
in a general or wide manner.
Example
The rules are broadly similar across all regions.
规则在所有地区大体相似。
A2 noun /brɪdʒ/

Bridge

桥
Meaning
a structure carrying a road, path, railway, etc. across a river, road, or other obstacle
Example
The old stone bridge has connected the two towns for over a century.
这座古老的石桥已经连接这两个城市超过一个世纪。
B2 noun breɪn ˈtreɪ.nɪŋ

brain-training

大脑训练
Meaning
Mental exercises designed to improve cognitive functions, memory retention, and overall brain performance.
Example
Regular brain-training can improve memory retention.
定期的大脑训练可以提高记忆力。
C2 noun /ˈbed.ləm/

Bedlam

混乱；嘈杂的混乱
Meaning
a scene of noisy confusion; chaos and disorder
Example
The classroom was complete bedlam after the fire alarm.
火灾警报后，教室变得完全混乱。
B2 adjective /boʊld/

Bold

大胆; 自信; 勇敢
Meaning
brave; confident; daring
Example
He made a bold decision to start his own business.
他做出了大胆的决定，开始了自己的生意。
C2 noun /ˈbiː.təl nʌt/

Betel-nut

槟榔
Meaning
seed of the areca palm tree, often chewed as a stimulant
Example
Betel-nut is commonly chewed in many South Asian countries.
槟榔在许多南亚国家是常见的咀嚼物。
C1 phrase ˌbaɪ.oʊ.daɪˈvɜː.sɪ.ti ˌprez.əˈveɪ.ʃən

biodiversity preservation

生物多样性保护
Meaning
The protection and conservation of the variety of life in all its forms, including different species, genetic diversity, and ecosystems.
Example
Biodiversity preservation is critical for ecological balance.
生物多样性保护对生态平衡至关重要。
B1 phrase bɛst ˈɛf.ərt

best effort

最大努力
Meaning
The maximum amount of effort or energy that someone can give.
Example
He gave his best effort to complete the task on time.
他为了按时完成任务，付出了最大的努力。
C2 noun /ˈbɑːr.nɪ.kəl/

Barnacle

藤壶
Meaning
a marine crustacean that attaches itself permanently to underwater surfaces
Example
The old ship's hull was covered with barnacles.
那艘旧船的船体上布满了藤壶。
C1 verb /ˈbæbəl/

babble

胡说
Meaning
to talk rapidly and continuously in a foolish way
Example
The baby babbles all day long.
宝宝整天嘟囔。
A1 verb /biː/

be

是
Meaning
To exist, to occur, or to have a particular quality.
Example
She wants to be a doctor.
她想成为一名医生。
C2 noun /ˈbɜːrɡər/

burgher

城市居民 (富裕的中产阶级)
Meaning
A citizen of a town, typically a member of the wealthy middle class.
Example
The burgher was respected as a prosperous merchant in the city.
这个布尔戈被尊敬为城市中的繁荣商人。
C2 noun /ˈbɛvi/

bevy

群体, 一群
Meaning
A large group of people or things of a particular kind.
Example
A bevy of swans floated on the lake.
一群天鹅在湖面上漂浮。
C1 noun, verb /ˈbʌtrəs/

buttress

扶壁，支撑
Meaning
a structure built against a wall for support; to support or strengthen
Example
The cathedral walls were buttressed to prevent collapse.
大教堂的墙壁被支撑以防止倒塌。
B2 noun /ˈbrɛkdaʊn/

breakdown

故障
Meaning
a failure or collapse of a system or machinery
Example
The car had a breakdown on the highway.
车子在高速公路上发生了故障。
B1 adverb /ˈbriːf.li/

Briefly

简要地
Meaning
in a short and clear way; for a short time
Example
Please explain the problem briefly.
请简要解释问题。
C2 adjective /beɪˈkoʊniən/

baconian

贝科尼安
Meaning
Relating to the philosopher Francis Bacon or his method of scientific reasoning.
Example
The researcher followed a Baconian approach to observation and experimentation.
研究人员遵循了一种贝科尼安的方法来进行观察和实验。
C2 adjective /ˈbiːstiəl/

bestial

兽性
Meaning
Relating to beasts; showing savagery, brutality, or lacking human sensibility.
Example
The prisoners were treated in a bestial manner.
囚犯们以野兽般的方式被对待。
B2 adjective /bɪˈkʌmɪŋ/

becoming

得体
Meaning
attractive, suitable, or flattering to the wearer or situation
Example
That dress is very becoming on her.
那件衣服看起来很合适。
C1 noun /ˈblʌd.ʃed/

Bloodshed

流血; 屠杀
Meaning
the killing or wounding of people, typically in large numbers during a conflict
Example
The peace treaty was signed to prevent further bloodshed.
和平条约被签署，以防止进一步的流血。
C2 verb /bɪˈfuːl/

befool

欺骗
Meaning
to deceive or trick someone into believing something false; to make someone appear foolish
Example
The scammer tried to befool innocent people with fake promises.
骗子试图用虚假的承诺欺骗无辜的人。
C1 noun /ˈbrɛvɪti/

brevity

Meaning
Concise and exact use of words in writing or speech.
Example
The brevity of the speech kept the audience engaged.
C2 adjective /ˈbɒni/

Bonny

美丽的; 漂亮的; 快乐的
Meaning
cheerful; pretty; attractive
Example
The bonny child played happily in the garden.
这个漂亮的孩子在花园里快乐地玩耍。
B2 noun /ˈbɒt.əl.nek/

bottleneck

瓶颈
Meaning
Narrow path or obstruction, a place or situation where flow becomes slow.
Example
The narrow bridge is a major bottleneck during rush hour.
窄桥在高峰期间是一个瓶颈。
C2 noun /ˈbreɪziər/

Brazier

黄铜工人
Meaning
a worker in brass; a portable container for burning charcoal or coal
Example
The brazier crafted beautiful brass ornaments.
这个黄铜工人制作了美丽的黄铜饰品。
C1 noun/adjective /ˈbæstərd/

bastard

私生子
Meaning
a child born to unmarried parents (offensive); also used informally as an insult or to describe something unpleasant
Example
He called him a bastard in anger.
他生气时骂他是私生子。
C2 adjective /ˈbʌksəm/

buxom

丰满且迷人的女性
Meaning
Plump, with a full figure and often large-breasted, especially used to describe women.
Example
The actress was described as a cheerful and buxom woman.
这位女演员被描述为一个快乐且丰满的女性。
C1 noun, verb /bʌldʒ/

bulge

Meaning
A swelling or protruding part; to swell outward or protrude.
Example
The bag began to bulge with too many books inside.
B2 adjective /ˈbaɪəst/

Biased

偏见
Meaning
showing prejudice for or against someone or something unfairly
Example
The judge was accused of being biased against the defendant.
法官被指控对被告有偏见。
C2 noun /ˌbædɪˈnɑːʒ/

badinage

玩笑，幽默对话
Meaning
Playful and humorous conversation; banter.
Example
The friends enjoyed a light badinage over coffee.
朋友们在咖啡旁享受轻松的玩笑。
C2 noun /ˈbræɡərt/

braggart

吹牛者
Meaning
a person who boasts about achievements or possessions
Example
No one liked him because he was such a braggart.
没有人喜欢他，因为他是个吹牛者。
C1 noun /ˈbʌrə, ˈbʊrə/

borough

区
Meaning
A town, district, or administrative division, especially one with its own local government.
Example
Brooklyn is a borough of New York City.
布鲁克林是纽约市的一个区。
C2 verb /bɪˈsiːtʃ/

beseech

恳求
Meaning
To ask someone urgently and fervently to do something; to beg.
Example
He beseeched the judge for mercy.
他恳求法官宽恕。
C2 verb /bɪˈhuːv/

behoove

有必要或适合某人做某事
Meaning
to be necessary, proper, or appropriate for someone to do
Example
It would behoove you to study before the exam.
你应该在考试前学习。
C1 noun /bɑːm/

balm

香膏
Meaning
A soothing ointment or something that provides comfort or relief.
Example
The balm helped relieve the pain from her sunburn.
香膏帮助缓解她的晒伤疼痛。
C1 verb /bɪˈlɪtl/

belittle

贬低
Meaning
To make someone or something seem less important or less valuable.
Example
He often belittled his coworkers to feel superior.
他经常贬低同事以感到优越。
B1 noun, verb /ˈbʊli/

bully

欺凌者 / 霸凌者
Meaning
A person who habitually seeks to harm or intimidate those weaker; to intimidate or mistreat someone weaker.
Example
The teacher stopped the older boy from trying to bully his classmates.
老师阻止了那个年纪较大的男孩，避免他试图欺负他的同学。
A2 noun /ˈbʌdi/

buddy

朋友
Meaning
a close friend or companion, used informally
Example
He went to the movies with his best buddy.
他和他最好的朋友一起去看电影。
C2 noun /ˈbloʊˌhɑrd/

blowhard

自负的人
Meaning
a person who brags a lot or talks in a boastful way
Example
Everyone avoided the blowhard at the party because he wouldn't stop bragging.
在派对上，大家都避开了那个自负的人，因为他不停地吹嘘。
C2 noun /ˌbæstərdaɪˈzeɪʃən/

bastardization

扭曲 / 退化
Meaning
the act of corrupting, degrading, or misrepresenting something
Example
Critics called the remake a bastardization of the original film.
评论家称重拍版是原电影的扭曲。
C1 noun /ˈblɪs.tər/

Blister

水泡
Meaning
a small bubble on the skin filled with serum and caused by friction, burning, or other damage
Example
The new shoes gave her a painful blister on her heel.
新鞋子在她的脚后跟上造成了一个痛苦的水泡。
C2 noun /ˈboʊsən/

boatswain

甲板长
Meaning
a ship's officer in charge of equipment and the crew
Example
The boatswain supervised the sailors on deck.
波茨温监督甲板上的水手。
C2 noun /ˌbeɪt ˈnwɑːr/

bete noire

令人讨厌的事物
Meaning
A person or thing that one particularly dislikes or fears.
Example
Grammar has always been his bete noire.
语法一直是他的贝特诺尔。
B2 adverb /ˈbəʊld.li/

Boldly

大胆地; 毫不畏惧
Meaning
in a confident and brave way; without fear
Example
She boldly stepped forward to face the challenge.
她勇敢地迈步向前，迎接挑战。
B2 noun, verb /blæst/

blast

爆炸, 强烈撞击
Meaning
a strong gust of wind, an explosion, or a loud sound; to destroy or shatter by explosion
Example
The explosion sent a powerful blast through the building.
爆炸通过大楼发送了一股强劲的爆风。
B1 verb /breɪk/

brake

Meaning
to slow down or stop a vehicle by applying a brake
Example
He braked suddenly to avoid hitting the dog.
C2 verb /bɪˈfɪt/

befit

适合
Meaning
to be suitable for; to be appropriate to
Example
Formal attire befits the seriousness of the occasion.
正式的服装适合这个场合的严肃性。
B1 verb /baʊns/

bounce

反弹
Meaning
to spring back after hitting something; to rebound.
Example
The ball bounced off the wall and hit the window.
球投在墙上反弹，然后打到窗户。
B1 noun /braɪd/

Bride

新娘
Meaning
a woman on her wedding day or just before and after the event
Example
The beautiful bride walked down the aisle in her white wedding dress.
美丽的新娘穿着她的白色婚纱走过过道。
B2 noun ˈbɛriəl saɪt

burial site

埋葬地点
Meaning
A place where a dead body is buried.
Example
The burial site of the martyrs was near the riverbank.
烈士的埋葬地点靠近河岸。
B2 noun /ˈbætəlˌfiːld/

battlefield

战场
Meaning
a place where a battle is fought
Example
The battlefield was covered with the remnants of the fight.
战场上布满了战斗的残余。
C2 noun /ˈbuːt.leɪs/

Boot-lace

靴带
Meaning
a cord or string used to fasten a boot or shoe
Example
I need to tie my boot-lace before going for a walk.
我需要在散步前系好我的靴带。
B2 noun /brɑːnz/

bronze

铜
Meaning
a metal made by combining copper and tin, often used for statues and medals
Example
The statue was made of solid bronze.
这座雕像是由坚固的铜制成的。
B2 verb /ˈbjuːtɪfaɪ/

beautify

美化
Meaning
to make something more beautiful or attractive
Example
The city plans to beautify the old park with trees and lights.
这座城市计划用树木和灯光美化旧公园。
B2 noun, verb /bluːm/

bloom

开花；繁荣
Meaning
to produce flowers; to develop or flourish; a flower or the state of flowering
Example
The roses bloom beautifully every spring.
玫瑰每年春天都会美丽地开花。
C2 adjective /ˈbɪz.ən.taɪn/ or /ˈbaɪ.zənˌtiːn/

byzantine

复杂
Meaning
Extremely complicated and detailed; relating to the Byzantine Empire or its style.
Example
The new tax regulations are so byzantine that few understand them.
新的税收规定非常复杂，很少有人能理解。
C1 noun /ˈbɪtər ɡɔːrd/

Bitter Gourd

苦瓜
Meaning
a green, bumpy vegetable with a very bitter taste, known for its medicinal properties
Example
Bitter gourd is excellent for controlling blood sugar levels.
苦瓜对于控制血糖水平非常有效。
A1 verb (past participle of 'bear'), adjective /bɔːrn/

born

出生
Meaning
To come into life; brought into existence.
Example
He was born in Dhaka in 1995.
他于1995年在达卡出生。
C1 noun /ˈbeɪ.zəl siːdz/

Basil Seeds

罗勒种子
Meaning
small black seeds from the basil plant, often used in drinks and desserts
Example
I added basil seeds to my lemonade for a refreshing drink.
我在柠檬水中加入了罗勒种子，制作了一种清爽的饮品。
B2 noun /ˈbrʌðərhʊd/

brotherhood

兄弟情谊
Meaning
The relationship between brothers; an association of people with common interests
Example
The soldiers shared a strong sense of brotherhood.
士兵们分享了强烈的兄弟情谊。
B1 noun, verb /bʌz/

buzz

嗡嗡声
Meaning
to make a low continuous humming sound; a feeling of excitement or interest
Example
I could hear the phone buzz during the meeting.
开会时我听到了手机的嗡嗡声。
B2 noun/verb /ˈbrækɪt/

bracket

金属支架
Meaning
A support attached to a wall for holding something; also, to group things together.
Example
The shelf was held up by a strong metal bracket.
架子被一个强大的金属支架支撑。
C2 adjective /ˈbɛlɪˌkoʊs/

bellicose

好战的
Meaning
Showing a tendency to argue or fight; aggressive.
Example
His bellicose attitude often got him into unnecessary conflicts.
他好战的态度常常让他卷入不必要的冲突。
A1 noun /bæk/

Back

背部
Meaning
the rear surface of the human body from the shoulders to the hips; the spine
Example
She hurt her back while lifting heavy boxes.
她在搬重箱子时伤了背部。
B2 noun /buːˈtiːk/

boutique

时尚店
Meaning
a small shop that sells fashionable clothes or accessories
Example
She bought a beautiful dress from a boutique downtown.
她在市中心的时尚店里买了一件漂亮的裙子。
C1 adjective/verb /ˈbæntərɪŋ/

bantering

开玩笑
Meaning
characterized by good-humored teasing or joking
Example
They had a bantering conversation at the café.
他们在咖啡馆进行了幽默的对话。
C1 noun /buːn/

boon

恩赐
Meaning
A thing that is helpful or beneficial.
Example
The internet is a boon to modern education.
互联网是现代教育的恩赐。
B2 verb /bɑːrk/

bark

吠叫
Meaning
to make a sharp sound like a dog; to speak angrily
Example
The dog barks at strangers.
狗对陌生人大叫。
B2 noun /buːθ/

booth

电话亭
Meaning
a small enclosed space or area used for a specific purpose, such as voting or selling.
Example
He went into the voting booth to cast his ballot.
他进入了投票亭，准备投票。
C1 adjective /ˈbæʃ.fəl/

Bashful

害羞的; 胆小的; 谦虚的; 容易尴尬
Meaning
shy; timid; modest; easily embarrassed
Example
The bashful child hid behind her mother when meeting strangers.
那个害羞的孩子在遇到陌生人时躲在她妈妈后面。
C2 noun /ˌbɪbliəʊˈmeɪniə/

bibliomania

书籍癖
Meaning
An extreme obsession with collecting or possessing books.
Example
His bibliomania led him to fill every room with books.
他的书籍癖使他把每个房间都塞满了书。
C2 adjective /ˈbreɪsɪŋ/

bracing

清新的
Meaning
Invigorating, refreshing, or providing strength and energy.
Example
The hikers enjoyed the bracing mountain air.
远足者享受着清新的山间空气。
A1 noun /bɔːl/

ball

球
Meaning
a round object used in games or sports
Example
The children played with a ball in the park.
孩子们在公园里玩球。
A2 noun /buːt/

Boot

靴子
Meaning
sturdy footwear covering the foot and ankle or lower leg
Example
He laced up his hiking boots before the mountain trek.
他在山地旅行前穿上了他的登山靴。
C1 adjective /bəˈzɜːrk/

berserk

疯狂
Meaning
Out of control with anger or excitement; wild or frenzied.
Example
The fans went berserk when their team won the championship.
当他们的队伍赢得了冠军时，粉丝们变得疯狂。
A2 noun/verb /ˈbʌdʒɪt/

budget

预算
Meaning
An estimate of income and expenditure for a set period of time; to plan expenses and income.
Example
The family created a budget to manage their expenses.
家庭制定了预算来管理开支。
C2 noun /bəˈfuːn/

buffoon

小丑
Meaning
A ridiculous but amusing person; a clown or jester.
Example
He acted like a buffoon at the party, making everyone laugh.
他在派对上像个小丑一样表演，让每个人都笑了。
C1 noun /baɪl/

Bile

胆汁
Meaning
a bitter greenish-brown alkaline fluid that aids digestion and is secreted by the liver and stored in the gallbladder
Example
The liver produces bile to help digest fats.
肝脏产生胆汁来帮助消化脂肪。
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

生物圈
Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
气候变化正在影响整个生物圈。
C2 adjective /bɪˈhoʊldən/

beholden

感激或负债
Meaning
indebted or obliged to someone for a service or help
Example
He felt beholden to his mentor for all the guidance.
他对他的导师感到感激，因为得到所有的指导。
B1 noun /bʊk ˈsel.ər/

Book seller

书商
Meaning
a person who sells books, especially as a business
Example
The book seller recommended a great novel for my summer reading.
书商推荐了我暑期阅读的一本好小说。
C2 noun /bɪˈhiː.mɒθ/

behemoth

庞然大物
Meaning
Something enormous, especially a large and powerful organization.
Example
The company grew into a corporate behemoth.
公司发展成了一个企业庞然大物。