bluff
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B2 verb /blʌf/

bluff

Meaning
to deceive someone by pretending to have strength, knowledge, or resources that one does not actually possess
Example
He tried to bluff his way into the exclusive club.
B2 adjective /ˌbaɪəˈlɒdʒɪkl̩/

biological

生物学的
Meaning
relating to the science of biology or to life and living organisms
Example
She is studying biological sciences at university.
她在大学学习生物科学。
B2 noun, verb /bʌt/

butt

Meaning
to hit or push with the head or horns; the end part of something, especially a cigarette
Example
The goat butted the fence with its horns.
B2 noun /ˈboʊld.nəs/

Boldness

大胆; 勇气
Meaning
willingness to take risks; confidence and courage in behavior
Example
Her boldness in confronting the problem impressed everyone.
她在面对问题时的大胆让所有人都印象深刻。
B2 noun /brɑː/

bra

文胸
Meaning
a woman's undergarment worn to support and cover the breasts
Example
She bought a comfortable bra for everyday wear.
她买了一件舒适的文胸用于日常穿着。
B2 adjective /blænd/

bland

乏味
Meaning
lacking strong features, flavor, or character; dull or uninteresting
Example
The soup was too bland for my taste.
这汤对我的口味太乏味了。
B2 noun /bent/

Bent

倾向; 倾向性
Meaning
a natural inclination or talent; a strong interest or liking for something
Example
She has a natural bent for music and art.
她对音乐和艺术有天生的倾向。
B2 noun /ˈbækɪŋ/

Backing

支持
Meaning
help or support; financial or material support
Example
The project received backing from several major investors.
该项目获得了多个主要投资者的支持。
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.
B2 noun /braɪb/

Bribe

贿赂
Meaning
a sum of money or something valuable given to someone to persuade them to do something dishonest or illegal
Example
The corrupt official was caught accepting a bribe from the construction company.
那个腐败的官员在接受建筑公司贿赂时被逮捕。
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。
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 verb /blɜːr/

blur

模糊
Meaning
to make something unclear or difficult to see
Example
Tears blurred her vision.
眼泪模糊了她的视线。
B2 noun /brum/

Broom

扫帚
Meaning
a long-handled brush of bristles or twigs, used for sweeping
Example
She used an old broom to sweep the fallen leaves from the porch.
她用一把旧扫帚清扫从门廊掉落的树叶。
B2 noun /biːt/

Beet

甜菜
Meaning
a plant with a round dark red root that is eaten as a vegetable
Example
Roasted beet with goat cheese makes a delicious salad.
烤甜菜配山羊奶酪做成美味的沙拉。
B2 noun /brest/

Breast

胸部
Meaning
the front surface of a person's or animal's body between the neck and the stomach
Example
The baby fell asleep on her mother's breast.
宝宝在母亲的胸部入睡。
B2 adjective /ˈbraʊn.ɪʃ/

Brownish

棕色的
Meaning
having a color somewhat like brown; tending toward brown
Example
The old paper had a brownish tint from age.
那张旧纸因岁月的缘故带有棕色的色调。
B2 verb /briːd/

breed

繁殖, 养育
Meaning
to produce young animals; to reproduce; to keep animals for producing young
Example
They breed horses on their farm.
他们在他们的农场上繁殖马。
B2 noun /ˈbjʊəroʊ/

bureau

办事处/机构
Meaning
An office or agency that provides services or manages specific duties.
Example
The travel bureau helped them plan their vacation.
旅游局帮助他们规划假期。
B2 adjective /bɪˈliːvəbl̩/

believable

可信的
Meaning
Able to be trusted or accepted as true or reasonable.
Example
Her story was so detailed that it sounded believable.
她的故事如此详细，以至于听起来很可信。
B2 noun /ˈbev.ər.ɪdʒ/

Beverage

饮料
Meaning
a drink, especially one other than water
Example
Would you like a hot or cold beverage with your meal?
你想要和你的餐一起喝热的还是冷的饮料？
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。
B2 noun, verb /ˈblɒsəm/

blossom

开花
Meaning
a flower or mass of flowers on a tree or plant; to develop or flourish
Example
The small garden began to blossom in spring.
小花园在春天开始开花。
B2 noun /ˈbɪʃəp/

bishop

主教
Meaning
a senior member of the Christian clergy, usually in charge of a diocese and empowered to confer holy orders.
Example
The bishop delivered a powerful sermon during Sunday service.
主教在星期天的礼拜中做了一个有力的布道。
B2 noun ˈbaɪ.əʊˌfjuː.əl

biofuel

生物燃料
Meaning
A fuel derived immediately from living matter, as opposed to fossil fuels derived from long-dead biological matter.
Example
Biofuels reduce dependence on conventional energy sources.
生物燃料减少了对传统能源来源的依赖。
B2 noun ˌbaɪ.oʊ.dɪˈvɝː.sə.t̬i

biodiversity

生物多样性
Meaning
The variety of life in the world or in a particular habitat or ecosystem.
Example
Rainforests are home to immense biodiversity.
雨林是巨大的生物多样性的家园。
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 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 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。
B2 noun /beɪs/

bass

低沉的男性嗓音 / 贝斯吉他
Meaning
the lowest adult male singing voice; also, low-frequency sounds in music or a type of fish
Example
He played the bass guitar at the concert.
他在音乐会弹奏了贝斯吉他。
B2 verb/noun /buː/

boo

Meaning
To show disapproval by shouting 'boo'; or a sound made to surprise or scare.
Example
The audience began to boo the bad performance.
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。
B2 noun ˈbluː.prɪnt

blueprint

详细规划
Meaning
A detailed plan or framework for a work or project, a pre-planned structure.
Example
The architect presented a blueprint for the new building.
建筑师为新建筑提出了详细规划。
B2 noun /ˈbæŋkrʌptsi/

bankruptcy

破产
Meaning
the state of being unable to pay debts owed, declared by a legal process
Example
The company declared bankruptcy after months of financial struggles.
公司在经历了几个月的财务困难后宣布破产。
B2 noun /bɪzˈnɛs sʌˈsɛs/

business success

商业成功
Meaning
The achievement of desired outcomes in business operations, typically measured by profitability, growth, and sustainability.
Example
Innovation drives business success.
创新推动商业成功。
B2 noun /ˈbel.i/

Belly

肚子
Meaning
the front part of the human trunk below the ribs, containing the stomach and bowels; abdomen
Example
The baby kicked in her belly during pregnancy.
怀孕期间，宝宝踢了她的肚子。
B2 verb /bræɡ/

brag

吹嘘
Meaning
to talk proudly about oneself or one's achievements in an annoying way
Example
He always brags about his expensive car.
他总是夸耀自己昂贵的车。
B2 adjective /ˌbaɪəʊdɪˈɡreɪdəbl/

biodegradable

可生物降解的
Meaning
Capable of being decomposed by natural biological processes, typically by bacteria or other living organisms, without causing harm to the environment.
Example
Biodegradable materials break down naturally without harming the environment.
可生物降解的材料自然分解，不会对环境造成伤害。
B2 verb /ˈbætər/

batter

反复打击
Meaning
To strike repeatedly with force.
Example
The waves battered the shoreline all night.
波浪整个晚上拍打着海岸线。
B2 noun /beɪ liːf/

Bay leaf

月桂叶
Meaning
dried aromatic leaf of the bay laurel tree used as a culinary herb
Example
Add a bay leaf to the soup for extra flavor.
在汤中加入月桂叶，增添风味。
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。
B2 interjection /ˈbrɑː.voʊ/

bravo

布拉沃
Meaning
used to express approval, admiration, or praise
Example
The audience shouted 'Bravo!' after the stunning performance.
观众在精彩的表演后大喊“布拉沃！”
B2 adjective /ˈbɒdɪli/

bodily

身体的
Meaning
relating to or concerning the body
Example
He suffered bodily harm in the accident.
他在事故中受到了身体伤害。
B2 noun, verb /ˈbʌŋkər/

bunker

地堡
Meaning
a reinforced underground shelter; to place or store something in a protected place
Example
They hid in a bunker during the air raid.
空袭期间他们躲在地堡里。
B2 adjective /bɪˈheɪvjərəl/

behavioral

行为的
Meaning
relating to the way a person or animal acts
Example
The psychologist studied the child's behavioral patterns.
心理学家研究了孩子的行为模式。
B2 noun /bleɪd/

Blade

刀片
Meaning
a sharp flat cutting edge of a knife, sword, or tool
Example
The blade of the knife needs to be sharpened.
刀刃需要磨锐。
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。
B2 adjective /ˈbɪtər/

Bitter

苦; 味道强烈; 表现出愤怒和失望
Meaning
having a sharp, pungent taste; feeling or showing anger and disappointment
Example
The medicine had a bitter taste.
药物有苦味。
B2 adjective /bəˈtænɪkəl/

botanical

植物学的
Meaning
relating to plants or plant life
Example
She works at the botanical garden.
她在植物园工作。
B2 adjective /ˈbʌmpi/

Bumpy

崎岖不平的；颠簸的
Meaning
having an uneven surface; rough; jolting
Example
The bumpy road made the car ride very uncomfortable.
颠簸的路让汽车的行驶变得非常不舒服。
B2 noun /ˈbɪtərnəs/

Bitterness

苦涩
Meaning
anger and disappointment at being treated unfairly; resentment; a sharp, unpleasant taste
Example
She spoke with bitterness about her former employer.
她谈到了对以前雇主的愤怒。
B2 noun bjʊəˈrɒk.rə.si

bureaucracy

官僚主义
Meaning
A system of government in which most of the important decisions are made by state officials rather than by elected representatives.
Example
Excessive bureaucracy can slow down decision-making.
过度的官僚主义会减缓决策过程。
B2 adjective /bɪˈlʌvɪd/

beloved

心爱
Meaning
dearly loved, highly regarded
Example
She was the beloved queen of the kingdom.
她是王国中深受喜爱的女王。
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。
B2 noun/verb /ˈbʌfər/

buffer

缓冲器 / 吸收冲击
Meaning
Something that lessens or absorbs the impact of a shock; to act as a protective barrier.
Example
The organization acts as a buffer between workers and management.
该组织在工人和管理层之间充当缓冲区。
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。
B2 verb /ˈbraɪtən/

brighten

使明亮
Meaning
to make something lighter or more colorful; to improve mood or make happier
Example
A few kind words can brighten someone's day.
几句善意的话可以让人的一天变得明亮。
B2 noun /ˈbriː.ðɪŋ tɛkˌniːks/

breathing techniques

呼吸技巧
Meaning
Methods of controlling breathing to achieve relaxation and improve health.
Example
Breathing techniques help in reducing stress and anxiety.
呼吸技巧有助于减少压力和焦虑。
B2 verb /bleɪz/

blaze

熊熊火焰
Meaning
to burn brightly or powerfully
Example
The fire blazed for hours before it was brought under control.
火焰持续燃烧了几个小时，直到它被控制住。
B2 noun /ˈbækˌsaɪd/

backside

背部
Meaning
the rear part or surface of something; informal term for the buttocks
Example
The kids slid down the hill on their backside.
孩子们从山坡上滑下来，屁股着地。
B2 verb /ˈbrɪdʒɪŋ/

bridging

建设桥梁，建立连接
Meaning
The action of building a bridge over something; connecting or reducing the distance between two things.
Example
The new initiative is bridging the gap between urban and rural development.
新举措正在缩小城市与乡村发展的差距。
B2 noun /biːk/

Beak

鸟嘴
Meaning
the hard pointed part of a bird's mouth
Example
The eagle has a sharp beak for tearing meat.
鹰有一个锋利的鸟嘴来撕裂肉。
B2 noun /baɪˈɒɡrəfi/

Biography

传记
Meaning
an account of someone's life written by someone else; the story of a person's life
Example
I'm reading a fascinating biography of Albert Einstein.
我正在阅读一部关于阿尔伯特·爱因斯坦的迷人传记。
B2 adjective /blʌnt/

blunt

钝的，直率的
Meaning
not sharp; direct and straightforward in speech
Example
Her blunt remarks offended some people.
她直率的评论冒犯了某些人。
B2 noun /ˈbɒtəni/

botany

植物学
Meaning
the scientific study of plants
Example
She is studying botany at the university.
她在大学里学习植物学。
B2 adjective /bɪˈzɑːr/

bizarre

离奇
Meaning
very strange or unusual, especially so as to cause interest or amusement
Example
He told a bizarre story that no one could believe.
他讲了一个离奇的故事，没有人能相信。
B2 noun /ˌbɛnɪˈfɪʃəri/

beneficiary

受益人
Meaning
a person who receives something, especially money or property, from a will or insurance policy
Example
She is the sole beneficiary of her father’s estate.
她是她父亲遗产的唯一受益人。
B2 noun, verb /bəˈfeɪ/ (noun), /ˈbʌfɪt/ (verb)

buffet

Meaning
A meal where guests serve themselves from a variety of dishes arranged on a table; also means to strike repeatedly (as a verb).
Example
We enjoyed a large buffet at the wedding reception.
B2 verb /bɪˈtreɪ/

betray

背叛
Meaning
to be disloyal to; to reveal secrets
Example
He felt betrayed by his closest friend.
他感到被他最亲密的朋友背叛。
B2 noun bækˈtɪə.ri.ə

bacteria

细菌
Meaning
A member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus.
Example
Specialized bacteria aid in waste decomposition.
专门的细菌有助于废物分解。
B2 noun /ˈbrɔːdˌkæstər/

broadcaster

广播员
Meaning
a person or organization that transmits a broadcast program.
Example
The broadcaster aired the match live to millions of viewers.
广播员将比赛实时转播给数百万观众。
B2 noun/verb /ˌbærɪˈkeɪd/

barricade

障碍物
Meaning
a barrier erected to block or defend against movement; to block a passage with obstacles
Example
Protesters built a barricade across the street.
抗议者在街道上建造了一个障碍物。
B2 noun /ˈbʌf.ə.loʊ/

Buffalo

水牛
Meaning
a large wild ox with heavy horns; American bison
Example
The buffalo grazed peacefully in the meadow.
水牛在草地上安静地吃草。
B2 verb /blɛnd/

blend

混合
Meaning
to mix things together smoothly; to combine harmoniously
Example
She blends the ingredients carefully.
她小心地混合了配料。
B2 verb /bɪˈfrɛnd/

befriend

交朋友
Meaning
to act as a friend to someone; to make friends with
Example
She befriended the new student at school.
她在学校与新学生成为了朋友。
B2 noun /ˈbælət/

ballot

选票
Meaning
a process of voting, usually in secret; the paper used to record a vote
Example
Voters cast their ballot in the election.
选民在选举中投下了选票。
B2 verb /breɪd/

braid

编织
Meaning
to weave together strands of hair or material
Example
She braided her hair before going to school.
她在去学校之前编了头发。
B2 noun /buˈkeɪ/

Bouquet

花束
Meaning
an attractively arranged bunch of flowers, especially one presented as a gift or carried at a ceremony
Example
The bride carried a beautiful bouquet of white roses down the aisle.
新娘携带着美丽的白玫瑰花束走过过道。
B2 noun/verb /beɪt/

bait

Meaning
Food or lure used to attract fish or animals; to deliberately provoke or annoy.
Example
He used worms as bait to catch fish.
B2 noun /ˈbɒmɪŋ/

bombing

轰炸
Meaning
an attack using bombs or explosives
Example
The city was devastated by the bombing.
这座城市在轰炸中被摧毁。
B2 noun /ˈbɒdiɡɑːrd/

bodyguard

保镖
Meaning
a person employed to protect someone from harm
Example
The celebrity arrived with her bodyguard.
那位名人带着她的保镖到达了。
B2 noun /ˈbæk.boʊn/

Backbone

脊柱
Meaning
the series of vertebrae extending from the skull to the pelvis; spine
Example
He injured his backbone in the accident.
他在事故中伤了他的脊柱。
B2 noun /ˈbrɔːd.bænd/

broadband

宽带
Meaning
a high-capacity transmission technique using a wide range of frequencies.
Example
Broadband internet has become a necessity in modern homes.
宽带互联网已成为现代家庭的必需品。
B2 noun /bɪˈtreɪəl/

Betrayal

背叛; 不忠
Meaning
the action of betraying one's country, group, or person; disloyalty
Example
His betrayal of their friendship hurt her deeply.
他对他们友谊的背叛深深伤害了她。
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 /ˈbærəl/

barrel

大桶
Meaning
a large cylindrical container used to hold liquids
Example
The wine was stored in a wooden barrel.
酒被储存在一个木制的大桶中。
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。
B2 noun /ˈbeɪ.zəl/

Basil

罗勒
Meaning
an aromatic herb with green leaves used in cooking, especially Italian cuisine
Example
The pasta sauce was flavored with fresh basil.
意大利面酱料中加入了新鲜的罗勒。
B2 verb /ˈbrɔːdən/

broaden

拓宽
Meaning
to make wider or larger in scope; to expand ideas, experience, or understanding
Example
Travel can broaden your perspective on different cultures.
旅行可以拓宽你对不同文化的视野。
B2 verb /bɪˈwɛər/

beware

小心
Meaning
to be cautious or alert about a potential danger or problem
Example
Beware of the dog near the gate.
小心门口附近的狗。
B2 noun /bɑnd/

Bond

纽带; 债券
Meaning
a close connection joining two or more people; a certificate of debt issued by a government or corporation
Example
The strong bond between the mother and child was evident.
母亲与孩子之间的强烈纽带是显而易见的。
B2 noun /ˈbæŋ.ɡəl/

Bangle

手镯
Meaning
a rigid bracelet or anklet worn as jewelry
Example
She wore beautiful gold bangles on her wrists.
她戴着漂亮的金手镯在手腕上。
B2 noun /brɪŋk/

brink

边缘
Meaning
The edge or point just before a significant event or change.
Example
The company was on the brink of bankruptcy.
公司处于破产的边缘。
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。
B2 noun /bædʒ/

badge

徽章
Meaning
A small emblem or sign worn to show membership, authority, or achievement.
Example
The police officer showed his badge to identify himself.
警察展示了他的徽章来证明自己的身份。
B2 verb /buːm/

boom

轰鸣
Meaning
to make a loud deep sound; to grow or increase rapidly
Example
The thunder boomed across the sky.
雷声在天空中轰鸣。
B2 noun ˈbɪz.nɪs ˈfaɪ.næns

business finance

商业财务
Meaning
The area of finance that deals with sources of funding and the capital structure of corporations.
Example
Effective business finance enhances profitability.
有效的商业财务提高了盈利能力。
B2 adjective /ˌben.ɪˈfɪʃ.əl/

beneficial

有益的
Meaning
Resulting in good; favorable or advantageous.
Example
Eye rubbing can be beneficial in moderation.
适度地揉眼睛是有益的。
B2 noun/adjective /ˈbʌmpər/

bumper

保险杠
Meaning
A protective bar at the front or back of a vehicle; also used to describe something unusually large or successful.
Example
The farmer celebrated a bumper harvest this year.
农民今年庆祝了一个丰收的年份。
B2 noun ˈbʌtərflaɪ ˌpɒpjəˈleɪʃən

Butterfly Population

蝴蝶种群
Meaning
The total number of butterflies in a particular area or ecosystem.
Example
The butterfly population is declining due to habitat loss.
由于栖息地丧失，蝴蝶种群正在减少。
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。
B2 noun /bluːz/

blues

蓝调
Meaning
a feeling of sadness; a style of music with melancholy themes
Example
Listening to blues music always calms him down.
听蓝调音乐总是让他平静下来。
B2 noun /broʊtʃ/

brooch

Meaning
a decorative jewelry pin that is attached to clothing
Example
She wore a beautiful silver brooch on her jacket.
B2 noun/verb /bʌst/

bust

Meaning
As a noun: A sculpture of a person's head, shoulders, and chest; As a verb: To break, smash, or arrest.
Example
The police busted the gang last night.
B2 noun; verb /breɪs/

brace

支架；做好准备
Meaning
a device that supports or strengthens something; to prepare mentally or physically for something difficult
Example
She braced herself for the strong wind.
她为强风做好了准备。
B2 adjective /beər/

Bare

裸; 未覆盖; 空; 最少
Meaning
naked; uncovered; empty; minimal
Example
The bare walls of the room needed some decoration.
房间的光秃秃的墙壁需要一些装饰。
B2 noun /bætʃ/

batch

一次性生产或处理的物品数量
Meaning
a quantity of items produced or processed at one time
Example
She baked a fresh batch of cookies this morning.
她今天早上烤了一批新鲜的饼干。
B2 verb /ˈbɔɪkɑt/

boycott

抵制
Meaning
to refuse to buy, use, or participate in something as a protest
Example
They decided to boycott the company's products.
他们决定抵制公司的产品。
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。
B2 adjective /brɪsk/

Brisk

迅速的; 精力充沛的; 活力四射的
Meaning
quick and energetic; lively; vigorous
Example
She took a brisk walk in the morning to feel energized.
她早晨快步走，感到精力充沛。
B2 verb /boʊlt/

bolt

突然跑掉; 用螺栓固定某物
Meaning
To move suddenly and quickly; also to fasten something with a bolt.
Example
The horse bolted from the stable after hearing a loud noise.
马在听到一声大响后从马厩冲了出去。
B2 noun, verb /bɒb/

bob

上下摆动
Meaning
a short sudden movement up and down; to move quickly up and down
Example
The small boat began to bob on the waves.
小船开始在波浪上上下摆动。
B2 noun/verb /bʌk/

buck

Meaning
A male deer; also to resist or oppose strongly.
Example
The horse began to buck wildly as the rider tried to hold on.
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。
B2 adjective /ˈbeə.rə.bəl/

Bearable

可忍受的; 容忍的; 不太不愉快或痛苦
Meaning
able to be endured; tolerable; not too unpleasant or painful
Example
The pain became bearable after taking the medicine.
服药后，疼痛变得可以忍受。
B2 noun /ˈbɑː.li/

Barley

大麦
Meaning
a cereal grain used for food, brewing beer, and animal feed
Example
The farmer harvested barley from his fields in autumn.
农民在秋天从他的田地里收获了大麦。
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。
B2 adverb /ˈblʌnt.li/

Bluntly

直言不讳; 直率地
Meaning
in a direct way without trying to be polite; frankly
Example
He told her bluntly that she was wrong.
他直接告诉她她错了。
B2 adjective /bliːk/

bleak

阴郁的
Meaning
cold, miserable, or without hope
Example
The future seemed bleak after the economic downturn.
经济衰退后，未来显得阴郁。
B2 noun /ˈbɛərɪŋ/

bearing

举止 / 姿态
Meaning
a person's way of standing or moving; relevance or connection to something
Example
Her calm bearing impressed everyone in the room.
她平静的姿态给房间里的每个人留下了深刻印象。
B2 noun /ˈbiː.təl/

Beetle

甲虫
Meaning
a hard-bodied insect with wing covers
Example
The black beetle scurried across the garden path.
黑色的甲虫快速地穿过了花园小路。