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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。
C1 adjective /ˈbɑːmi/

balmy

温和而愉快的温暖；舒缓。
Meaning
Mild and pleasantly warm; soothing.
Example
We enjoyed a walk on a balmy summer evening.
我们在一个温和的夏日晚间散步。
B2 noun /ˈbɒmər/

Bomber

轰炸机
Meaning
military aircraft designed to drop bombs on targets
Example
The bomber squadron flew over the city at dawn.
轰炸机中队在黎明时飞过城市。
A2 noun, verb /bɑːr/

bar

酒吧, 阻止
Meaning
a counter where drinks are served; to prevent or block
Example
They decided to meet at the bar after work.
他们决定下班后在吧见面。
C2 verb /bɪˈθɪŋk/

bethink

回想
Meaning
to cause oneself to consider or remember something
Example
He bethought himself of the promise he had made.
他想起了他曾做出的承诺。
C1 noun /brɔːl/

brawl

争吵
Meaning
a noisy fight in a public place
Example
A brawl broke out outside the bar late at night.
夜晚在酒吧外发生了争吵。
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。
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。
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。
B2 noun /bɪtʃ/

Bitch

母狗;
Meaning
a female dog; an unpleasant or spiteful woman (offensive)
Example
The bitch gave birth to five puppies.
那只母狗生下了五只小狗。
A2 noun /ˈbɪznəsmæn/

businessman

商人
Meaning
a person engaged in commercial or industrial business activities
Example
The businessman invested heavily in new technology.
商人们在新技术上进行了大量投资。
B1 noun /ˈbeɡər/

Beggar

乞丐
Meaning
a person who lives by asking for money or food
Example
The beggar sat by the temple asking for alms.
乞丐坐在寺庙旁乞讨。
C1 adjective /ˈbɛndi/

bendy

柔韧的
Meaning
Easily curved or flexible.
Example
The bendy straw made it easier to drink from the cup.
弯曲的吸管使得从杯子里喝水更加容易。
B1 adjective /bɔɪld/

Boiled

煮熟的
Meaning
cooked in boiling water
Example
She served boiled eggs for breakfast.
她早餐时提供了煮鸡蛋。
C1 noun/verb /ˈbɔɪ/ or /ˈbuːi/

buoy

浮标, 保持漂浮
Meaning
A floating marker on water; to keep something afloat or encourage someone.
Example
The news buoyed their spirits after the loss.
新闻在失落后提升了他们的精神。
C1 verb /bɒmˈbɑːrd/

bombard

Meaning
to attack continuously with bombs, questions, or other forces
Example
Reporters bombarded the minister with difficult questions.
C2 noun /ˈbɑːrbərɪzəm/

Barbarism

野蛮
Meaning
extreme cruelty or brutality; absence of culture and civilization
Example
The barbarism of the war crimes shocked the entire international community.
战争罪行的野蛮行为震惊了整个国际社会。
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。
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 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。
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 /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 /ˈblaɪðsəm/

blithesome

愉快
Meaning
cheerful, carefree, and full of joy
Example
She entered the room with a blithesome smile that lifted everyone's spirits.
她带着愉快的笑容走进房间，大家的心情都变好了。
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。
C1 adjective /bəˈlɪdʒ.ər.ənt/

belligerent

好战或侵略性
Meaning
Hostile and aggressive, ready to fight or argue.
Example
His belligerent attitude often leads to conflicts.
他好战的态度常常导致冲突。
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。
C1 adjective /bɪˈrɛft/

bereft

失落的
Meaning
Deprived of or lacking something, especially a nonmaterial asset.
Example
After the betrayal, he felt bereft of hope and trust.
背叛后，他感到失落于希望和信任。
A1 noun /bɔɪ/

boy

男孩
Meaning
a male child or young male person
Example
The boy ran across the playground.
那个男孩跑过了操场。
C2 adjective /bɪˈfʌdld/

befuddled

困惑的
Meaning
confused, unable to think clearly
Example
He looked befuddled after hearing the complex instructions.
在听到复杂的指示后，他看起来很困惑。
C1 adjective /ˈblʌdləs/

bloodless

无血
Meaning
without bloodshed; lacking violence or vitality
Example
The revolution was surprisingly bloodless.
这场革命出奇地没有流血。
C1 verb bɪˈkwiːð

bequeath

遗赠
Meaning
Leave something to someone in a will; pass down or hand down to the next generation.
Example
The scientist bequeathed his research papers to the university.
科学家把他的研究论文遗赠给了大学。
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 /ˈbaɪoʊ ˌdeɪtə/

Bio-data

简历
Meaning
biographical data; a resume or curriculum vitae containing personal and professional information
Example
Please submit your bio-data along with the job application.
请将您的简历与求职申请一起提交。
C2 noun /ˈbeɪlɔːr/

bailor

寄托人
Meaning
a person who temporarily transfers possession of goods or property to another under a bailment agreement
Example
The bailor entrusted the valuable artwork to the museum for safekeeping.
寄托人把艺术品交给了博物馆。
B1 noun /ˌbækˈjɑːrd/

backyard

幸福
Meaning
an area of land behind a house, typically used for recreation or gardening
Example
The children played football in the backyard.
当她收到奖项时，她无法掩饰自己的幸福。
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 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。
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。
A1 noun /bred/

Bread

面包
Meaning
a food made from flour, water, and yeast mixed together and baked
Example
She bought fresh bread from the bakery.
她从面包店买了新鲜的面包。
C1 noun /bruːˈtæləti/

brutality

残暴
Meaning
extreme cruelty or violence; savage or inhumane treatment
Example
The brutality of the attack shocked the entire community.
这次攻击的残暴震惊了整个社区。
A2 noun /bænd/

band

乐队
Meaning
a group of musicians who play music together
Example
The band performed live at the concert.
乐队在音乐会上现场表演。
C2 adverb /ˈbruːskli/ or /ˈbrʌskli/

brusquely

粗鲁地
Meaning
in a blunt, abrupt, or rude manner
Example
She brusquely dismissed the suggestion.
她粗鲁地拒绝了这个建议。
C1 verb /ˈbɑːrtər/

barter

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

break

休息
Meaning
A pause in work or during an activity or event.
Example
Short breaks refresh your mind.
短暂的休息可以让你的思维焕然一新。
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？
C1 noun /brɒŋˈkaɪtɪs/

bronchitis

支气管炎
Meaning
inflammation of the lining of the bronchial tubes, which carry air to and from the lungs
Example
The doctor diagnosed him with acute bronchitis.
医生诊断他患有急性支气管炎。
C2 verb /bɪˈhuːvz/

behooves

有必要
Meaning
third person singular form of 'behoove'; means it is proper or necessary
Example
It behooves every citizen to follow the law.
每个公民都应该遵守法律。
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。
B1 noun /blæk ˈber.i/

Black berry

黑莓
Meaning
a small dark purple or black fruit that grows on bushes
Example
We picked fresh blackberries from the garden for our pie.
我们从花园里摘取了新鲜的黑莓做我们的派。
C2 noun /bəˈfuːnəri/

buffoonery

小丑行为
Meaning
Foolish or ridiculous behavior intended to amuse.
Example
His constant buffoonery irritated the serious audience.
他不断的小丑行为激怒了严肃的观众。
B1 verb /bæn/

ban

禁止
Meaning
to officially forbid something; to prohibit
Example
The government banned smoking in public places.
政府禁止在公共场所吸烟。
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。
C2 verb /bɪˈleɪ/

belay

固定绳索
Meaning
to secure a rope by winding it around an object; to stop or cancel an order (nautical/military use)
Example
The climber asked his partner to belay the rope tightly.
攀岩者要求他的搭档紧紧地固定绳索。
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。
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。
C1 adjective /bɪˈfɪt.ɪŋ/

Befitting

合适的; 适合的; 对于特定情况或人适当
Meaning
appropriate; suitable; proper for a particular situation or person
Example
He wore formal attire befitting the important occasion.
他穿了适合重要场合的正式服装。
A2 verb /bɜːrn/

burn

燃烧
Meaning
to be on fire; to damage with fire or heat
Example
The candle will burn for several hours.
蜡烛将燃烧几个小时。
C2 noun /breɪ/

brae

山坡
Meaning
A hillside or slope, especially in Scotland.
Example
They climbed up the grassy brae to see the sunset.
他们爬上了长满草的山坡去看日落。
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。
C1 noun /ˈbaɪ.lɔː/

by-law

地方性法规
Meaning
A rule made by a company, organization, or local authority to control the actions of its members.
Example
The city council passed a new by-law regulating street vendors.
市议会通过了一项新的地方法规，规范街头小贩。
C2 adjective /ˈbʌlbəs/

bulbous

膨胀的 / 圆形的
Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
青蛙有一个膨胀的鼻子和大眼睛。
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。
C1 noun /bʌm/

bum

臀部
Meaning
informal term for the buttocks; also a homeless or lazy person
Example
He sat on his bum all day doing nothing.
他整天坐在臀部上什么都不做。
A1 adjective /bluː/

Blue

蓝色
Meaning
having the color of the clear sky or the sea
Example
The blue ocean stretched endlessly to the horizon.
蓝色的海洋一直延伸到地平线。
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。
C1 noun /ˈbærɪstər/

barrister

律师
Meaning
A type of lawyer in certain legal systems who specializes in courtroom advocacy and litigation.
Example
The barrister argued the case passionately before the judge.
律师在法官面前激情澎湃地辩论案件。
A1 verb /bɪˈɡɪn/

begin

开始
Meaning
to start doing something; to commence
Example
I will begin my studies tomorrow.
我明天开始学习。
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。
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。
C1 noun /braɪn/

brine

盐水
Meaning
Water saturated with salt, often used for preserving food.
Example
The olives were stored in brine to keep them fresh.
橄榄被保存在盐水中以保持新鲜。
C1 verb /bɪˈhɛd/

behead

斩首
Meaning
to cut off a person's or animal's head; to remove the leader or most important part
Example
The historical account describes how the traitor was beheaded as punishment.
历史记载描述了叛徒作为惩罚被斩首的经过。
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。
A1 adjective, adverb, verb /ˈbɛtər/

better

Meaning
of a more excellent or effective type or quality; to surpass or improve
Example
He felt better after taking the medicine.
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 /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。
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。
A1 adjective /ˈbɪɡɪst/

biggest

最大的
Meaning
largest in size, amount, degree, or importance; superlative form of big
Example
This is the biggest challenge we have ever faced.
这是我们面临过的最大挑战。
C2 noun /ˈbælæst/

ballast

压舱物
Meaning
heavy material used to stabilize a ship or vehicle
Example
The ship was loaded with ballast to remain steady in the storm.
船只装载了压舱物，以便在风暴中保持稳定。
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 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 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。
C2 adjective /ˈblɪŋkəd/

blinkered

目光狭窄
Meaning
Having a limited or narrow outlook; unable or unwilling to consider other perspectives.
Example
His blinkered attitude stopped him from seeing the bigger picture.
他那种目光狭窄的态度使他无法看到更大的画面。
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。
A1 noun, verb /bʊk/

book

Meaning
A set of written, printed, or blank pages fastened together; to arrange for someone to have a seat, room, or ticket in advance.
Example
I booked a table at the restaurant for dinner.
C2 verb /breɪz/

braze

焊接
Meaning
To join two pieces of metal by heating and melting a filler metal into the joint.
Example
The mechanic brazed the broken pipe to fix the leak.
机械师通过加热焊接破损的管道来修复泄漏。
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。
C2 noun /ˌbækəˈneɪliə/

bacchanalia

纵酒狂欢
Meaning
A Roman festival of Bacchus celebrated with dancing, drinking, and revelry; any occasion of wild and drunken revelry.
Example
The novel describes the party as a bacchanalia of excess and joy.
小说将这个派对描述为一个过度和欢乐的巴卡纳利亚。
A1 adjective /bɛst/

best

最好
Meaning
Of the highest quality, excellence, or standing.
Example
She is the best student in the class.
她是班里最好的学生。
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。
C1 adjective /bræʃ/

brash

无礼
Meaning
self-assertive in a rude, noisy, or overconfident way
Example
His brash comments offended many people at the meeting.
他那无礼的评论在会议上冒犯了许多人。
C2 noun /ˈbroʊmiːn/

bromine

溴
Meaning
a dark red, dense, toxic liquid element used in making dyes, flame retardants, and medications
Example
Bromine is commonly used in water treatment chemicals.
溴通常用于水处理化学品中。
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 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。
A2 noun/verb /bəˈluːn/

balloon

气球
Meaning
A small bag made of thin rubber or similar material that can be inflated with air or gas; as a verb, to expand rapidly.
Example
The children played with a red balloon at the party.
孩子们在聚会上玩了一个红色的气球。
B1 noun /bloʊ/

Blow

打击；用手、武器或坚硬物体的强力打击
Meaning
a powerful stroke with a hand, weapon, or hard object
Example
The boxer delivered a devastating blow to his opponent.
拳击手给对手造成了毁灭性的打击。
C1 adjective /ˈbrɪslɪŋ/

bristling

竖毛的; 充满能量
Meaning
full of energy, anger, or excitement; showing bristles standing up
Example
He entered the room bristling with confidence.
他带着自信走进了房间。
C2 noun /ˌbræɡəˈdoʊʃioʊ/

braggadocio

吹嘘行为
Meaning
boastful or arrogant behavior; empty boasting
Example
His endless braggadocio annoyed everyone at the party.
他无休止的吹嘘行为让派对上的每个人都感到厌烦。
C1 noun /ˈblɛm.ɪʃ/

blemish

瑕疵
Meaning
A small mark or flaw that spoils the appearance of something.
Example
The mirror had a small blemish on the surface.
镜子表面有一个小瑕疵。
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。
C1 noun /bəˈnɛv.ə.ləns/

benevolence

仁慈或慈爱
Meaning
The quality of being well meaning and kindly; the disposition to do good.
Example
His benevolence towards the poor earned him respect.
他的仁慈使他赢得了贫穷者的尊重。
C2 adjective /blaɪð/

blithe

漫不经心
Meaning
Showing a casual and cheerful indifference considered improper or carefree happiness.
Example
She had a blithe disregard for the rules.
她对规则的漠视毫不在意。
C2 noun /bəˈkuːl/

Bakul

巴库尔花
Meaning
a fragrant white flower native to South Asia, scientifically known as Mimusops elengi
Example
The sweet fragrance of bakul flowers filled the evening air in the village.
巴库尔花的甜美香气弥漫在村庄的傍晚空气中。
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 /ˈbækdrɒp/

backdrop

背景
Meaning
a painted cloth or other structure used behind a stage
Example
The backdrop for the play was a beautiful mountain scene.
戏剧的背景是一幅美丽的山景。
A1 noun /biːtʃ/

beach

沙滩
Meaning
An area of sand or small stones beside the sea or a lake.
Example
They spent the day relaxing on the beach.
他们在沙滩上度过了一整天，放松自己。
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 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 /ˈbʊlɪt/

Bullet

子弹
Meaning
a metal projectile fired from a gun
Example
The bullet missed its target and hit the wall.
子弹错过了目标并击中了墙壁。
A2 noun /boʊl/

Bowl

碗
Meaning
a round, deep dish or basin used for food or liquid
Example
She served the soup in a large ceramic bowl.
她把汤端到一个大陶瓷碗里。
C2 noun /ˈbɪlɪŋzˌɡeɪt/

billingsgate

粗俗或侮辱性的语言
Meaning
Coarse or abusive language; vulgar or offensive speech.
Example
The heated argument quickly descended into billingsgate.
激烈的争论迅速转化为粗俗的语言。
C2 noun /ˈbɜːrdʒɪs/

burgess

市民
Meaning
A citizen of a town or borough with full rights of citizenship.
Example
In medieval times, a burgess had the right to vote and hold property.
在中世纪，市民有投票权和拥有财产的权利。
C1 noun /ˈbæs.ti.ən/

bastion

堡垒, 防御工事
Meaning
a stronghold or fortification; a place or institution strongly defending particular principles
Example
The castle stood as a bastion against enemy attacks.
这座城堡作为抵御敌人攻击的堡垒而屹立。
A1 noun /bʌs/

Bus

公共汽车
Meaning
a large motor vehicle carrying passengers by road
Example
I take the bus to work every morning.
我每天早上乘公共汽车上班。
A2 noun /bentʃ/

Bench

长凳
Meaning
a long seat for several people, typically made of wood or stone
Example
The students sat on the bench.
学生们坐在长凳上。
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。
C2 verb /bɪˈtroʊð/

betroth

订婚
Meaning
To formally promise to marry someone; to engage.
Example
He was betrothed to the princess at a young age.
他在年轻时就与公主订婚了。
C2 noun /broʊɡ/

brogue

坚固的鞋子；口音
Meaning
A strong outdoor shoe; also a marked accent, especially Irish or Scottish.
Example
He bought a pair of stylish brogues for the wedding.
他为婚礼买了一双时尚的布罗格鞋。
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.
A2 adverb /ˈbæk.wərdz/

Backwards

向后; 逆序
Meaning
in the direction that is behind; in reverse order
Example
He counted backwards from ten to one.
他从十数到一，倒着数。
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。
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。