breathing techniques
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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。
C2 noun /ˈbʌt.ə.flaɪ piː/

Butterfly Pea

蝴蝶豆
Meaning
a blue flowering plant with butterfly-shaped flowers, used to make herbal tea
Example
Butterfly pea flowers turn tea into a beautiful blue color.
蝴蝶豆花将茶水染成美丽的蓝色。
B2 verb /blʌʃ/

blush

脸红
Meaning
to become red in the face due to embarrassment or shyness
Example
She blushed when he complimented her.
她在他夸奖她时脸红了。
C2 noun /brəˈvjʊrə/

bravura

Meaning
a display of great skill and brilliance, especially in music or performance
Example
The pianist delivered a bravura performance that left the audience spellbound.
B1 noun /brif/

Brief

简短; 简洁
Meaning
a concise statement of the facts; a set of instructions given to a person about a job or task
Example
The lawyer received a detailed brief about the upcoming court case.
律师收到了有关即将到来的法院案件的详细简报。
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。
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。
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。
B2 noun /broʊtʃ/

brooch

Meaning
a decorative jewelry pin that is attached to clothing
Example
She wore a beautiful silver brooch on her jacket.
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？
C2 adjective /ˈbɪbjələs/

bibulous

醉鬼
Meaning
Excessively fond of drinking alcohol.
Example
His bibulous habits worried his family.
他的醉鬼习惯让他的家人很担心。
C1 verb /ˈblækən/

blacken

使变黑
Meaning
to make something black or darker; to stain, soil, or tarnish
Example
Smoke from the fire began to blacken the walls.
火灾的烟开始把墙壁熏黑了。
A2 noun /bɑːθ/

Bath

浴缸; 洗澡
Meaning
the act of washing one's body; a container for bathing
Example
I take a hot bath every evening.
我每天晚上洗热水澡。
C1 adjective /ˈbaʊn.tɪ.fəl/

bountiful

丰盛的 / 慷慨的
Meaning
Large in quantity; abundant; generous in giving.
Example
The farmer was grateful for the bountiful harvest.
农民感激丰收的成果。
C2 noun /bjuːt/

butte

孤山
Meaning
an isolated hill with steep sides and a flat top, common in arid regions
Example
The travelers could see a tall butte rising in the desert.
旅行者们能看到沙漠中一座高耸的孤山。
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。
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。
B1 noun /ˈbaɪbəl/

bible

圣经
Meaning
the Christian scriptures consisting of the Old and New Testaments; also used for any authoritative book
Example
She reads the Bible every morning.
她每天早晨读圣经。
A1 noun /ˈbɛdruːm/

bedroom

卧室
Meaning
A room used for sleeping in.
Example
The children were playing in the bedroom.
孩子们正在卧室里玩耍。
A1 noun /bɪˈɡɪnɪŋ/

beginning

开始
Meaning
The start or first part of something.
Example
The beginning of the story was very interesting.
故事的开始非常有趣。
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。
C1 adjective bəˈnev.əl.ənt

benevolent

仁慈的, 慷慨的, 友好的
Meaning
Kind, generous, showing goodwill and kindness.
Example
His benevolent nature made him beloved.
他的仁慈天性使他非常受欢迎。
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。
C1 noun /blɪs/

Bliss

极致的幸福；极大的喜悦
Meaning
perfect happiness; great joy
Example
She felt pure bliss while watching the beautiful sunset.
她在观看美丽的日落时感到纯粹的幸福。
C1 adjective /bɪˈleɪtɪd/

belated

迟到的
Meaning
coming or happening later than expected or usual
Example
She sent me a belated birthday card.
她寄给我一张迟到的生日卡。
C1 noun /bɑːrˈbeəriən/

Barbarian

野蛮人; 未开化者;
Meaning
a person from an uncivilized group; someone who is cruel or brutal
Example
The ancient Romans considered anyone outside their empire to be barbarians.
古罗马人认为所有在他们帝国之外的人都是野蛮人。
C2 verb /bɪˈweɪl/

bewail

哀叹
Meaning
to express deep sorrow or regret over something; to mourn openly
Example
She bewailed the loss of her childhood home.
她哀叹失去了童年的家。
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。
C2 noun /ˌbrɪɡ.əˈdɪər/

brigadier

布里加迪尔
Meaning
A military officer rank, usually commanding a brigade.
Example
The brigadier inspected the troops before the parade.
布里加迪尔在游行前检查了部队。
A2 noun /ˈbʌtərflaɪ/

butterfly

蝴蝶
Meaning
an insect with large, often brightly colored wings that flies during the day
Example
A beautiful butterfly landed on the flower.
一只美丽的蝴蝶停在花上。
C1 verb /bruːd/

brood

Meaning
to think deeply about something that makes one unhappy; also, a group of young birds hatched at the same time
Example
He sat alone, brooding over his failures.
A1 noun /ˈbrʌðər/

brother

兄弟
Meaning
a male sibling
Example
My brother is two years older than me.
我的兄弟比我大两岁。
A1 verb /bʌt/

but

撞头
Meaning
to hit or push with the head or horns; to strike forcefully
Example
The goat butted against the fence.
山羊撞到了篱笆。
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。
C2 adjective /ˈbɛərˌfeɪst/

barefaced

厚颜无耻
Meaning
shameless and undisguised; openly bold or unashamed
Example
He told a barefaced lie in front of everyone.
他在大家面前说了个厚颜无耻的谎言。
B1 noun ˈbreɪvəri

bravery

勇气
Meaning
Courageous behavior or character; the quality of being brave.
Example
The bravery of our soldiers is unforgettable.
我们士兵的勇气是难忘的。
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。
C1 verb /ˈbruːtəlaɪz/

brutalize

残酷对待
Meaning
to treat someone with extreme violence or cruelty; to make something harsh or cruel
Example
The regime was accused of brutalizing innocent civilians.
该政权被指控残酷对待无辜平民。
B1 noun /ˈbæɡɪdʒ/

Baggage

行李; 个人物品;
Meaning
suitcases and bags containing personal belongings; past experiences or problems that affect behavior
Example
Please collect your baggage from the conveyor belt at the airport.
请从机场的传送带上取回您的行李。
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。
C1 noun /ˈbʊzəm/

bosom

胸部
Meaning
the human chest, especially a woman’s breast; also used metaphorically to refer to closeness or intimacy
Example
She kept the secret close to her bosom.
她把秘密藏在胸口。
B1 noun ˈbæriə(r)

barrier

障碍
Meaning
A fence or other obstacle that prevents movement or access.
Example
The barrier prevented entry.
障碍阻止了进入。
A2 verb /bet/

bet

打赌
Meaning
to risk money on the outcome of something; to be confident
Example
I bet it will rain tomorrow.
我打赌明天会下雨。
C1 noun /blɒˈkeɪd/

Blockade

封锁
Meaning
an act or means of sealing off a place to prevent goods or people from entering or leaving
Example
The naval blockade prevented supplies from reaching the port.
海军封锁阻止了物资到达港口。
C2 noun /blæk ˈkɑːr.də.məm/

Black Cardamom

黑豆蔻
Meaning
a large aromatic spice pod with a smoky flavor, commonly used in Indian and Middle Eastern cooking
Example
Add black cardamom to the curry for a rich, smoky flavor.
在咖喱中加入黑豆蔻，增添丰富的烟熏味。
C1 noun /bɑːrb/

barb

刺, 尖锐的评论
Meaning
a sharp projection such as on a fishhook; a cutting remark
Example
The fishhook has a small barb to keep the fish from escaping.
鱼钩上有一个小刺，以防止鱼逃脱。
C2 adjective /ˈbʌmblɪŋ/

bumbling

笨拙
Meaning
Acting in a clumsy, awkward, or confused way.
Example
The bumbling waiter spilled the drinks on the table.
那个笨拙的服务员把饮料撒在桌子上。
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。
C1 verb /ˈbɒɡəl/

boggle

使迷惑
Meaning
to overwhelm or confuse; to be astonished or puzzled by something
Example
The complexity of the puzzle boggled his mind.
这个谜题的复杂性让他的头脑感到困惑。
C2 adjective /ˈbæti/

batty

疯狂
Meaning
crazy or eccentric in behavior
Example
The old man down the street is a bit batty but harmless.
街上的老人有点疯狂，但无害。
C1 adjective /ˈbuːzi/

boozy

酒气的
Meaning
containing or involving a lot of alcohol; slightly drunk from alcohol
Example
The party became boozy as the night went on.
随着夜晚的进行，派对变得很有酒气。
C2 noun /ˈbriːzˌweɪ/

breezeway

有顶走道
Meaning
A roofed outdoor passage, often connecting two buildings.
Example
The breezeway connected the house to the garage.
有顶走道将房子与车库连接在一起。
A1 noun /ˈbɪldɪŋ/

building

建筑
Meaning
A structure with a roof and walls, such as a house, school, or office.
Example
The old building was renovated into a museum.
这座旧建筑被翻新并改建为博物馆。
A2 noun /ˈbɑt.əm/

Bottom

底部；底层
Meaning
the lowest point or part of something; the ground under a body of water
Example
The treasure chest was lying at the bottom of the ocean.
宝箱躺在海洋的底部。
C1 adjective /ˈbɔɪənt/ or /ˈbuːjənt/

buoyant

漂浮的，愉快的
Meaning
Able to float easily; cheerful and optimistic.
Example
She remained buoyant despite the difficulties.
她在困难面前依然保持乐观。
B1 noun /bɔɪl/

Boil

脓疱; 疖
Meaning
a painful, pus-filled bump under the skin caused by infected hair follicles
Example
The painful boil on his neck required medical treatment.
他脖子上的疼痛脓疱需要医疗处理。
C1 noun /brɛdθ/

breadth

宽度
Meaning
The distance or measurement from side to side; width; a wide range.
Example
The breadth of his knowledge impressed everyone.
他的知识宽度给大家留下了深刻印象。
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。
C2 verb /bɪˈnʌm/

benumb

使麻木
Meaning
to make physically numb or without sensation; to make mentally dull or insensitive
Example
The freezing wind seemed to benumb his fingers within minutes.
刺骨的寒风几分钟内就使他的手指麻木了。
B1 noun /bɑːm/

Bomb

炸弹
Meaning
an explosive device designed to cause damage or destruction
Example
The bomb disposal unit carefully defused the explosive device.
炸弹拆除单位小心地引爆了爆炸装置。
C1 noun /ˈbuːt.stræp.ɪŋ/

bootstrapping

自筹资金
Meaning
Starting a business with personal resources or small investments without external funding or venture capital.
Example
Many entrepreneurs rely on bootstrapping to launch their businesses.
许多企业家依靠自筹资金启动他们的业务。
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。
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。
B1 noun /boʊ/

Bow

弓
Meaning
a weapon for shooting arrows, made of a curved piece of wood
Example
The archer drew his bow and aimed at the target.
射手拉开了他的弓，瞄准了目标。
B1 noun /ˈbriːðɪŋ/

breathing

幸福
Meaning
the process of taking air into and expelling it from the lungs.
Example
Deep breathing can help you relax.
当她收到奖项时，她无法隐藏自己的幸福。
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。
A2 verb /bɪˈheɪv/

behave

表现
Meaning
to act in a particular way; to conduct oneself
Example
Children should behave well in school.
孩子们应该在学校里表现得很好。
B1 noun /ˈbed ʃiːt/

Bed sheet

床单
Meaning
a large rectangular piece of cloth used as bedding to lie on or under
Example
The clean white bed sheet felt soft against her skin.
干净的白色床单在她的皮肤上感觉柔软。
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。
B2 noun /ˈbʌn.dəl/

Bundle

包裹; 捆
Meaning
a collection of things or quantity of material tied or wrapped up together
Example
The mailman delivered a bundle of letters to our house.
邮递员把一包信送到了我们的家。
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 verb, noun /ˈbʌsəl/

bustle

喧嚣, 忙碌
Meaning
to move in an energetic or noisy manner; busy activity in a place
Example
The marketplace bustled with vendors and customers.
市场充满了小贩和顾客。
C1 noun /ˈbraɪ.dəl/

Bridle

缰绳; 马笼头
Meaning
the headgear used to control a horse, consisting of buckled straps and a bit
Example
The rider adjusted the horse's bridle before mounting for the race.
骑手在上马前调整了马的缰绳。
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。
A2 noun /bɪl/

Bill

鸟嘴
Meaning
the beak of a bird, especially when it is broad and flat
Example
The duck used its bill to filter food from the water.
那只鸭子用它的喙从水中过滤食物。
A1 noun /bɪt/

Bit

一小块或某物的少量; 短时间或短距离
Meaning
a small piece or quantity of something; a short time or distance
Example
Can you wait a bit longer for me?
你能为我再等一会儿吗？
A2 adjective /ˈbroʊkən/

Broken

破损的; 损坏的; 断裂的
Meaning
damaged; not working; fractured
Example
The broken window needs to be replaced immediately.
破损的窗户需要立即更换。
A2 verb /bɛr/

bear

承受
Meaning
to carry; to endure; to give birth to; to support
Example
She cannot bear the pain anymore.
她再也承受不了这种痛苦了。
B1 noun ˈbæl.ənst daɪ.ət

balanced diet

均衡饮食
Meaning
A diet consisting of the proper quantities and proportions of foods needed to maintain health or growth.
Example
A balanced diet is essential for maintaining good health.
均衡饮食对维持良好的健康至关重要。
A2 noun /ˈbʊkʃɒp/

bookshop

书店
Meaning
a retail store where books are sold
Example
She spent an hour browsing in the small bookshop.
她在那家小书店里逛了一个小时。
C1 noun /ˌbɪbliˈɒɡrəfi/

bibliography

参考书目
Meaning
a list of books, articles, or other sources used or referred to in scholarly work
Example
The report includes a detailed bibliography at the end.
报告在最后包括了详细的参考书目。
A2 noun /boʊn/

Bone

骨头
Meaning
any of the hard parts inside a human or animal that make up its frame
Example
The doctor said the bone was completely healed after the fracture.
医生说，骨头在骨折后完全恢复了。
C2 noun /ˌbeɪˈliː/

bailee

受托人
Meaning
a person or party who temporarily receives possession of goods or property from another under a legal agreement
Example
The bailee must take reasonable care of the goods while they are in his possession.
受托人必须合理地保管财产。
C2 adjective /ˈbʌmpʃəs/

bumptious

自负的
Meaning
Arrogantly self-assertive or conceited.
Example
The bumptious student interrupted the teacher several times.
那个自负的学生打断了老师好几次。
C2 adjective /ˈbɪliəs/

bilious

胆汁的
Meaning
Relating to bile or an ill-tempered, irritable disposition.
Example
He became bilious after hearing the unfair criticism.
他在听到不公正的批评后变得暴躁。
C2 verb /bɪˈlaɪ/

belie

掩饰
Meaning
To give a false impression of something; to contradict.
Example
His calm face belied his inner anxiety.
他平静的面容掩饰了他内心的焦虑。
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。
C2 noun /bɪˈtroʊðəl/

betrothal

订婚
Meaning
The formal engagement to be married.
Example
Their betrothal was announced to the whole village.
他们的订婚在整个村庄宣布。
C1 adjective, noun /ˈbʊrʒ.wɑː/

bourgeois

布尔乔亚
Meaning
Relating to the middle class, often with materialistic values or conventional attitudes.
Example
The novel criticizes the bourgeois lifestyle of the city dwellers.
这本小说批评了城市居民的布尔乔亚生活方式。
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 /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。
C1 adjective /bɪˈmjuːzd/

bemused

困惑的，迷茫的
Meaning
confused, puzzled, or lost in thought
Example
She looked bemused when he asked the strange question.
当他问了一个奇怪的问题时，她看起来很困惑。
C2 verb /bɪˈdɛk/

bedeck

装饰
Meaning
to decorate or adorn something in a showy way
Example
The hall was bedecked with flowers for the wedding.
大厅为婚礼装饰了花卉。
C2 noun /bəˈsuːn/

bassoon

一种大号木管乐器
Meaning
a large woodwind instrument with a deep sound
Example
The orchestra featured a beautiful bassoon solo.
乐团演奏了美妙的巴松独奏。
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。
C1 adjective /ˌbaɪˈlæt.ər.əl/

bilateral

双边
Meaning
An agreement or relationship between two parties that is mutual, two-sided, or reciprocal.
Example
The two countries signed a bilateral trade agreement.
这两个国家签署了一项双边贸易协议。
C1 adjective /ˈblaɪtɪd/

blighted

荒废的
Meaning
Spoiled, damaged, or destroyed.
Example
The blighted neighborhood was abandoned by most residents.
荒废的社区被大多数居民遗弃。
C2 noun /boʊ/

beau

男友
Meaning
a male admirer or boyfriend; a fashionable young man
Example
She arrived at the party with her beau.
她和她的男友一起到达了派对。
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。
C2 verb /ˈbækˌslaɪd/

backslide

倒退
Meaning
To relapse into bad habits, undesirable practices, or moral decline.
Example
After months of progress, he began to backslide into old habits.
经过几个月的进展，他开始回到旧习惯中。
B2 noun /ˈbæŋkrʌpt/

Bankrupt

破产
Meaning
a person unable to pay debts; having no money; completely lacking in something
Example
The company went bankrupt after years of poor financial management.
公司在多年糟糕的财务管理后破产了。
C1 verb /bɪˈstoʊ/

bestow

授予
Meaning
To give or present something as a gift or honor.
Example
The king bestowed honors upon the brave soldiers.
国王授予勇敢的士兵荣誉。
C1 noun /beɪn/

bane

祸根
Meaning
A cause of great distress, harm, or annoyance.
Example
Traffic jams are the bane of city life.
交通堵塞是城市生活的祸根。
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。
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 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。
C1 verb /broʊtʃ/

broach

提出
Meaning
to bring up a subject for discussion
Example
She decided to broach the topic of salary with her manager.
她决定与经理讨论工资问题。
C2 verb /ˈbraʊˌbiːt/

browbeat

威胁 / 强迫
Meaning
To intimidate or bully someone into doing something
Example
The lawyer tried to browbeat the witness.
律师试图威胁证人。
B1 adjective /blæŋk/

blank

空白
Meaning
showing no expression or containing nothing written, printed, or recorded.
Example
Her face went blank when she heard the bad news.
当她听到坏消息时，她的脸变得空白。
C1 noun /blɜːrb/

blurb

宣传描述
Meaning
a short promotional description of a book, product, or service
Example
The back cover had a blurb praising the novel.
封底有一段宣传描述，赞扬这本小说。
C2 noun /ˈbɪvuˌæk/

bivouac

临时营地
Meaning
a temporary camp without tents or cover, usually used by soldiers or mountaineers
Example
The climbers set up a bivouac on the mountainside.
登山者在山坡上搭建了一个临时营地。
C1 noun /bɪˈriːvmənt/

bereavement

Meaning
The state of having lost a loved one through death.
Example
She received many letters of sympathy during her time of bereavement.
C1 verb /ˈbɑːrtər/

barter

Meaning
To exchange goods or services without using money.
Example
They bartered their crops for handmade tools.
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。
A1 adjective /bæd/

bad

坏
Meaning
not good; unpleasant, harmful, or of poor quality
Example
The milk smells bad, so don’t drink it.
牛奶闻起来很糟，所以不要喝。
C2 adjective /ˈbeɪnfəl/

baneful

有害的
Meaning
Causing harm, ruin, or destruction; deadly or poisonous.
Example
His baneful influence ruined the community.
他的有害影响摧毁了社区。
A2 noun /ˈbenɪfɪt/

Benefit

好处; 利益; 益处
Meaning
an advantage or profit gained from something; a helpful or good effect
Example
Exercise has many health benefits for your body.
运动对你的身体有许多健康益处。
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。
C2 noun /ˈblændɪʃmənt/

blandishment

恭维
Meaning
flattering or pleasing statement or action used to persuade someone gently
Example
She used every blandishment to win his support.
她用了所有的恭维来赢得他的支持。
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。
B1 verb /bɜːrst/

burst

爆裂
Meaning
to break open suddenly; to be full of something
Example
The balloon bursts with a loud pop.
气球突然爆炸发出响亮的声音。