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1sleek back
线条流畅的脊背
讲解形容词sleek指外形光滑流畅、线条优美，常修饰汽车、动物或设计
搭配sleek design, sleek lines, sleek body, sleek appearance
近义streamlined, smooth, elegant
反义rough, bulky
派生sleekly, sleekness
The sports car has a sleek back that cuts through the air with minimal drag.
这辆跑车拥有线条流畅的车尾，能以最小阻力划破空气。
2chemical agent
化学试剂
讲解chemical agent指具有化学作用的物质，可指试剂，也可指化学武器
搭配chemical agent exposure, toxic chemical agent, use a chemical agent
近义chemical substance, chemical compound
派生chemical agents (复数), agent (单独指试剂/药剂)
记忆agent源自拉丁语agere（做、起作用），即起作用的物质
Farmers must handle every chemical agent with gloves to avoid skin damage.
农民必须戴手套处理每一种化学试剂，以避免皮肤受损。
3northern hemisphere
北半球
讲解指赤道以北的半个地球，与southern hemisphere相对，常作地理话题
搭配in the northern hemisphere, the northern hemisphere's climate
近义the north half of the globe
反义southern hemisphere
派生hemisphere (半球), hemispherical (半球形的)
Summer in the northern hemisphere begins around June and ends in September.
北半球的夏季大约从六月开始，到九月结束。
4kick off with
开始
讲解非正式短语，表示以某事作为开始，后接名词或动名词
搭配kick off with a speech, kick off with an introduction
近义start with, begin with, open with
反义end with, conclude with
派生kick-off (名词，开场)
The conference will kick off with a keynote speech by a famous scientist.
会议将以一位著名科学家的主题演讲开始。
5vote down
投票否决
讲解表示通过投票否决某提案，宾语常为proposal、plan、bill等
搭配vote down a proposal, vote down a bill, vote down the plan
近义reject, turn down, defeat
反义approve, pass, vote through
派生vote (名词/动词), voter (投票者)
The committee voted down the proposal to raise tuition fees for students.
委员会投票否决了提高学生学费的提案。
6make/break a deal
达成/解除协议
讲解make a deal指达成协议，break a deal指毁约，常用于商业或政治语境
搭配make a deal with sb, break a deal, seal a deal
近义reach an agreement, strike a bargain / cancel an agreement
反义break a deal (与make相对)
派生deal-maker (善于达成协议的人)
Both sides worked hard to make a deal before the deadline expired.
双方都努力在截止日期前达成协议。
7make concrete prediction
做出具体的预测
讲解动词短语，make 后接具体名词 prediction；学术写作中常与 about/for 连用，表示对某事的预测
搭配make a prediction, make predictions about, make a rough prediction
近义forecast, project, anticipate
反义avoid predicting
Economists find it risky to make concrete predictions about house prices next year.
经济学家认为对明年的房价做出具体预测是有风险的。
8individual flexibility
个人的灵活性
讲解名词短语，individual 强调“个人的”，flexibility 不可数；常用于讨论工作方式与教育安排
搭配offer flexibility, greater flexibility, flexibility in doing sth
近义personal freedom, adaptability
反义rigid uniformity
Working from home gives employees individual flexibility that a fixed office schedule cannot offer.
居家办公赋予员工固定的办公室作息无法提供的个人灵活性。
9mountainous pockets
山区
讲解pocket 此处指“小块孤立区域”，mountainous pockets 指零散分布的山区地带，多用于地理与社会类阅读
搭配remote pockets, isolated pockets, pockets of poverty
近义remote areas, isolated regions
派生pocket（孤立小区域）
Medical supplies rarely reach the mountainous pockets where the poorest families live.
医疗物资很少能到达最贫困家庭居住的山区。
10communication channel
通信电路，通信信道
讲解既可指技术上的通信信道，也可指抽象的沟通渠道；写作中常用来讨论信息传播方式
搭配open channel, main channel, channel of communication
近义medium, means of contact
反义barrier to communication
The internet has become the main communication channel between governments and citizens.
互联网已成为政府与公民之间的主要沟通渠道。
11beneficial effect
有利影响
讲解固定搭配 have a beneficial effect on sth；effect 可数，常用形容词 beneficial/positive/profound 修饰
搭配have a beneficial effect on, beneficial effects of, a beneficial impact
近义positive influence, favourable impact
反义harmful effect, adverse effect
Regular exercise has a beneficial effect on both mental and physical health.
规律锻炼对身心健康都有益处。
12run off
逃跑；流失
讲解多义短语：指人“逃跑”，也指液体“流走”、土壤“流失”；写作中常用于环境类话题
搭配run off with sth, run off the road, rainwater run-off
近义flee, escape, drain away
反义stay put, remain
Heavy rain caused the soil to run off the hillsides and pollute the river below.
大雨使土壤从山坡上流失，污染了下方的河流。
13collateral damage
附带性的危害
讲解多用于军事、政策语境，指非打击目标却受牵连的人或物，也可引申为决策带来的意外负面后果
搭配collateral damage to civilians / cause collateral damage / suffer collateral damage
近义unintended harm / side effect / incidental loss
派生collateral（adj. 附带的；平行的）
Civilian casualties are often dismissed as collateral damage in modern armed conflicts.
在现代武装冲突中，平民伤亡常被轻描淡写地视为附带性危害。
14tribal emblem
部落的象征
讲解emblem 指具有象征意义的标志或图案，tribal emblem 强调族群身份认同，常见于人类学、历史类阅读
搭配a national emblem / a tribal emblem / bear an emblem
近义tribal symbol / clan insignia / totem
派生emblematic（adj. 象征性的）
Each clan carved its own tribal emblem onto the wooden shields used in ceremonies.
每个氏族都把本族的部落象征雕刻在仪式所用的木盾上。
15daunting task
艰巨的任务
讲解daunting 意为「令人望而生畏的」，常修饰 task、challenge、prospect，写作中可替换 difficult
搭配a daunting task / a daunting challenge / seem daunting to sb
近义formidable task / uphill struggle / tall order
反义an easy task / a piece of cake
派生daunt（v. 使胆怯）/ undaunted（adj. 无所畏惧的）
Reducing urban air pollution while sustaining economic growth is a daunting task.
在保持经济增长的同时减少城市空气污染是一项艰巨的任务。
16anthropological science
人类学科学
讲解anthropological 是 anthropology 的形容词形式，人类学强调实证与田野调查，多用于学术类阅读
搭配anthropological research / anthropological science / an anthropological perspective
近义ethnological / sociological（语境相近）
派生anthropology（n. 人类学）/ anthropologist（n. 人类学家）
Fieldwork in remote villages forms the backbone of anthropological science.
在偏远村庄进行的田野调查构成了人类学科学的主干。
17inevitable changes
不可避免的变化
讲解inevitable 表示「必然发生的」，常与 change、consequence、outcome 搭配，写作中可加强论证语气
搭配inevitable changes / an inevitable consequence / it is inevitable that...
近义unavoidable changes / inescapable shifts
反义avoidable changes / preventable outcomes
派生inevitably（adv. 不可避免地）/ inevitability（n. 必然性）
Globalisation has brought inevitable changes to the way small towns earn their living.
全球化给小城镇的谋生方式带来了不可避免的变化。
18nuclear explosion
核爆炸
讲解nuclear 意为「核的」，与 explosion、energy、weapon 等搭配，常见于环境与科技类话题
搭配a nuclear explosion / nuclear energy / a nuclear weapon
近义atomic blast / atomic detonation
派生nuclear（adj. 核的；原子核的）/ nucleus（n. 原子核；核心）
Scientists warned that even a small nuclear explosion could spread radioactive dust for miles.
科学家警告说，即便是一场小规模核爆炸也可能使放射性尘埃扩散数英里。
19modern genetics
现代遗传学
讲解学术高频名词短语，雅思阅读/写作常考话题，指研究基因与遗传规律的现代科学
搭配modern genetics research; the field of modern genetics; advances in modern genetics
近义contemporary genetics; molecular genetics
派生geneticist (遗传学家); genetic (遗传的)
Modern genetics has revolutionized our understanding of how inherited diseases develop.
现代遗传学彻底改变了我们对遗传性疾病如何发展的理解。
20in store
即将发生
讲解表示某事即将发生或等待某人，多用于未知或令人期待之事，常与 be 连用
搭配be in store for sb; have sth in store; what lies in store
近义await; be ahead; be forthcoming
反义be over; be past
Nobody knows what surprises are in store for the global economy next year.
没有人知道明年全球经济会有什么样的惊喜在等着我们。
21world record
世界纪录
讲解可数名词短语，常与 break、set、hold 等动词搭配，用于体育或成就类话题
搭配break a world record; set a new world record; hold the world record
近义global best; best-ever result
派生record-breaking (破纪录的); record holder (纪录保持者)
The athlete broke the world record for the 100-metre sprint at the championship.
这位运动员在锦标赛上打破了100米短跑的世界纪录。
22facial massage
面部按摩
讲解健康美容类名词短语，facial 作形容词修饰 massage，雅思口语美容话题可用
搭配gentle facial massage; a facial massage session; give sb a facial massage
近义face massage; facial treatment
派生massage therapist (按摩师); massaging (按摩的)
A relaxing facial massage can reduce stress and improve blood circulation in the skin.
放松的面部按摩可以减轻压力并改善皮肤的血液循环。
23conference attendees
参会者
讲解正式名词短语，指参加会议的人，学术与商务写作中常用，attendee 为可数名词
搭配conference attendees from; attract conference attendees; register as a conference attendee
近义participants; delegates; those present
派生attend (出席); attendance (出席)
Conference attendees received a detailed programme outlining all the keynote speeches.
参会者收到了一份详细的项目手册，列出了所有主题演讲。
24medicine cabinet
药物宝库
讲解家居类名词短语，指存放药品的柜子；此处释义“药物宝库”应为误译，实指药柜
搭配stock the medicine cabinet; reach for the medicine cabinet; a locked medicine cabinet
近义medicine chest; first-aid cupboard
派生medicine (药); cabinet (柜子)
She keeps painkillers and bandages in the medicine cabinet above the bathroom sink.
她把止痛药和绷带放在浴室水槽上方的药柜里。
25effective prosecution
有效起诉
讲解形容词effective强调“产生预期效果的”，常与prosecution搭配，指起诉程序合法且有力，多用于法律类阅读。
搭配effective prosecution, bring an effective prosecution, a prosecution against sb.
近义successful prosecution, efficient prosecution
反义ineffective prosecution, failed prosecution
The new evidence allowed the police to carry out an effective prosecution of the gang leader.
新证据使警方得以对团伙头目进行有效起诉。
26bonus payment
奖金
讲解bonus payment指工资之外的额外报酬，常与annual/performance等词连用，写作中可替代salary作具体举例。
搭配annual bonus payment, performance bonus, receive a bonus payment
近义bonus, incentive payment
派生bonus scheme, bonus culture
Many companies offer a bonus payment to employees who exceed their annual sales targets.
许多公司向超额完成年度销售目标的员工发放奖金。
27contribute to
贡献
讲解contribute to中to为介词，后接名词或动名词，不可接动词原形，是雅思写作因果论证的高频表达。
搭配contribute to health, contribute significantly to, contribute to the problem
近义lead to, play a part in, be conducive to
反义hinder, undermine
Regular exercise and a balanced diet contribute to both physical and mental well-being.
经常锻炼和均衡饮食有助于身心健康。
28social elements
社会因素
讲解social elements指构成社会现象的各种因素，常用于分析类写作，与economic/cultural factors并列使用。
搭配social elements, key social elements, underlying social elements
近义social factors, social forces
反义natural elements
Crime rates are shaped not only by law but also by deeper social elements such as poverty.
犯罪率不仅由法律决定，还受贫困等更深层社会因素的影响。
29make an appointment
约会
讲解make an appointment表示“预约”，后常接with sb.或at a place，口语和书信写作中都很实用。
搭配make an appointment with sb., make an appointment at the clinic, cancel an appointment
近义book an appointment, schedule an appointment
反义cancel an appointment
You should make an appointment with the dentist before the pain gets any worse.
你应该在疼痛加重之前预约牙医。
30capture sunlight
获取阳光
讲解capture sunlight指捕获、吸收阳光，常用于能源与环境类话题，capture此处为“获取、捕捉”义。
搭配capture sunlight, capture solar energy, capture heat
近义absorb sunlight, harness sunlight
派生capture, captured
Solar panels are designed to capture sunlight and convert it into usable electricity.
太阳能电池板的设计目的是获取阳光并将其转化为可用的电能。
31clay brick
陶土砖
讲解clay brick 指黏土烧制的建筑用砖，常用于描述传统建筑或环保建材，雅思阅读建筑类话题常见。
搭配clay brick wall, clay brick building, lay clay bricks
近义mud brick, terracotta brick
派生clay-brick (作定语)
The old factory was built with clay bricks, which kept the interior cool in summer.
这座老工厂是用陶土砖建造的，使室内在夏天保持凉爽。
32regular customer
常客
讲解regular customer 指经常光顾某商店或场所的顾客，口语与写作中均可用来描述消费习惯。
搭配loyal regular customer, attract regular customers, a regular customer at
近义loyal customer, frequent visitor
反义occasional visitor, one-off customer
The café offers a free drink to every regular customer who visits ten times a month.
这家咖啡馆每月光顾十次的常客可获赠一杯免费饮品。
33cede sth. to sb.
把…让给…
讲解cede sth. to sb. 意为正式把领土、权利或份额让给他人，语气正式，多用于历史或商业语境。
搭配cede territory to, cede control to, cede power to
近义give up, surrender, hand over
反义retain, seize
The company was forced to cede part of its market share to a stronger rival.
该公司被迫将部分市场份额让给一个更强的竞争对手。
34material existence
物质存在
讲解material existence 指物质层面的存在，常出现在哲学、宗教类雅思阅读中，与精神层面相对。
搭配believe in material existence, the nature of material existence
近义physical existence, material reality
反义spiritual existence
Philosophers have long debated whether material existence is all that truly matters.
哲学家们长期争论物质存在是否才是真正重要的东西。
35continental voyage
大陆航行
讲解continental voyage 指跨越大陆或大陆间的长途航行，多用于历史、地理类文章描述早期探险。
搭配undertake a continental voyage, a long continental voyage
近义long sea journey, transcontinental journey
A continental voyage across the Atlantic in the 18th century could take several weeks.
在18世纪，一次横跨大西洋的大陆航行可能要花费数周时间。
36spice distribution
香料外销
讲解spice distribution 指香料的销售与流通，常用于历史类阅读，涉及贸易路线与经济发展。
搭配the spice distribution network, control spice distribution
近义spice trade, spice export
派生distribute spices
The spice distribution network once made this port the richest city in the region.
香料外销网络曾使这座港口成为该地区最富有的城市。
37pent-up primal urge
压抑的原始冲动
讲解多用于描写人物心理，指长期被压抑、突然可能爆发的本能欲望，常出现在小说或心理类雅思阅读中
搭配pent-up emotions, pent-up frustration, pent-up demand
近义suppressed instinct, repressed desire
反义released impulse
Years of strict discipline left him with a pent-up primal urge to break every rule.
多年的严格纪律让他内心积压着一股想要打破一切规则的原始冲动。
38grazing behaviour
牧食行为
讲解学术用语，指动物觅食吃草的行为模式，常见于生态学、农业类雅思阅读文章
搭配grazing behaviour patterns, study grazing behaviour, affect grazing behaviour
近义feeding behaviour, foraging habits
派生graze, grazer
Scientists observed the grazing behaviour of cattle across different types of pasture.
科学家观察了牛在不同类型牧场上的牧食行为。
39irrigation system
灌溉系统
讲解指为农田供水的设施体系，常出现在农业、历史或环境类雅思阅读与写作中
搭配build an irrigation system, modern irrigation system, irrigation system design
近义watering system, water supply network
派生irrigate, irrigation
The ancient irrigation system allowed farmers to grow crops even in dry seasons.
古老的灌溉系统使农民即使在旱季也能种植作物。
40colour intensity
色度
讲解指颜色的浓烈或饱和程度，常用于描述材料、图像或化学实验中的色彩特征
搭配high colour intensity, measure colour intensity, colour intensity changes
近义colour saturation, colour depth
反义colour fading
The colour intensity of the fabric faded quickly after several washes in hot water.
这种织物在热水中洗了几次后色度很快变淡了。
41official documents
官方文件
讲解指由政府或权威机构出具、具有法律效力的文件，常见于签证、移民类雅思场景
搭配submit official documents, official documents required, verify official documents
近义formal papers, legal documents
反义unofficial records
Applicants must submit all official documents before the deadline to avoid rejection.
申请人必须在截止日期前提交所有官方文件，以免被拒。
42chief executive
最高层管理者
讲解指公司或机构的最高负责人，即 CEO，常用于商业、管理类雅思阅读与写作
搭配chief executive officer, appoint a chief executive, former chief executive
近义top executive, managing director
派生CEO, executive
The chief executive announced a bold plan to restructure the entire company.
这位最高管理者宣布了一项重组整个公司的大胆计划。
43tap into
探索，发掘
讲解多用于资源、潜力、市场、数据等抽象对象，含“加以利用”之意，语气积极。
搭配tap into resources / tap into the market / tap into potential
近义draw on / exploit / make use of
反义waste / squander
派生tap（n. 龙头；v. 轻敲）
Only by tapping into local knowledge can researchers design solutions that truly fit the community.
只有发掘当地的知识，研究人员才能设计出真正适合该社区的解决方案。
44vigilance test
警觉测试
讲解指测量注意力与反应速度的测试，常见于心理学、交通安全及职业健康语境。
搭配pass a vigilance test / fail a vigilance test / a test of vigilance
近义attention test / alertness test
派生vigilant（adj. 警觉的）/ vigilance（n. 警觉）
Drivers who fail the vigilance test are far more likely to cause accidents on long journeys.
未通过警觉测试的司机在长途驾驶中引发事故的可能性要大得多。
45weaving blanket
编织毯
讲解weaving 为动名词作定语，说明毯子的制作方式，类似 a knitting needle、a writing desk。
搭配a hand-woven blanket / a woollen blanket / weave a blanket
近义woven rug / handwoven throw
派生weave（v. 编织）/ weaver（n. 织工）
The weaving blanket her grandmother made has been passed down through three generations.
她祖母编织的毯子已经传了三代。
46quartz-crystal clock
石英钟
讲解复合名词作定语，quartz-crystal 修饰 clock，说明其振荡元件为石英晶体。
搭配a quartz-crystal oscillator / a digital clock / set the clock
近义quartz clock / crystal clock
派生quartz（n. 石英）/ crystal（n. 晶体）
A quartz-crystal clock keeps time so accurately that it may lose only a second a year.
石英钟走时极为精准，一年可能只误差一秒。
47have a positive impact on
对…有积极影响
讲解雅思写作高频搭配，后接名词或动名词；impact 前可用 significant、profound 等修饰。
搭配have a positive impact on / exert an impact on / a lasting impact on
近义have a beneficial effect on / influence positively
反义have a negative impact on / harm
派生impact（v. 影响；n. 冲击）
Regular exercise has a positive impact on both mental health and academic performance.
规律运动对心理健康和学业表现都有积极影响。
48adequate stock and supply
充足的库存和供应
讲解多用于医疗、救灾、供应链等语境，adequate 强调“足够而非过量”。
搭配ensure adequate stock / maintain supplies / a steady supply of
近义sufficient inventory and provisions
反义a shortage of stock / insufficient supply
派生adequate（adj. 充足的）/ adequacy（n. 充分）
The hospital ensured adequate stock and supply of masks before the flu season began.
医院在流感季开始前确保了口罩的充足库存和供应。
49gear wheels
齿轮
讲解可数名词短语，指机械中互相咬合传动的齿轮，常用复数 gear wheels。
搭配interlocking gear wheels, a set of gear wheels, wear down the gear wheels
近义cogwheels, cogs, gears
派生gearwheel（单数形式）
The old clock's gear wheels had worn down, so it kept losing time every day.
那座旧钟的齿轮已经磨损，所以它每天都走慢。
50pharmaceutical research
制药研究
讲解不可数名词短语，指药物研发领域的研究，常见于学术与新闻语境。
搭配conduct pharmaceutical research, fund pharmaceutical research, cutting-edge pharmaceutical research
近义drug research, medical research, drug development
派生pharmaceutical company, pharmaceutics
Investment in pharmaceutical research has led to vaccines that save millions of lives.
对制药研究的投资带来了拯救数百万生命的疫苗。
51famous prodigy
著名神童
讲解可数名词短语，prodigy 指天赋异禀的少年，常与 famous/child/musical 连用。
搭配a child prodigy, a musical prodigy, a prodigy at maths
近义genius, wunderkind, talented youngster
反义late bloomer, slow learner
The famous prodigy amazed the audience by solving complex equations at only eight.
这位著名神童年仅八岁就解出复杂方程，令观众惊叹。
52alarming turn
惊人的转变
讲解可数名词短语，turn 此处指事态的变化方向，alarming 强调令人不安。
搭配take an alarming turn, an alarming turn of events, a dramatic turn
近义a worrying shift, a disturbing development
反义a reassuring turn, an encouraging turn
The negotiations took an alarming turn when both sides refused to compromise.
当双方都拒绝妥协时，谈判出现了令人担忧的转变。
53societal changes
社会性的变革
讲解可数名词短语，societal 是 society 的形容词形式，比 social 更正式、更学术。
搭配bring about societal changes, sweeping societal changes, adapt to societal changes
近义social transformations, social shifts
派生society, societal norms
Rapid technological advances have brought about profound societal changes in rural areas.
技术的迅速进步给农村地区带来了深刻的社会性变革。
54challenging time
具有挑战性的时刻
讲解可数名词短语，指困难重重的阶段，常用于描述个人经历或历史时期。
搭配go through a challenging time, a challenging time for sb, in a challenging time
近义a difficult period, a tough time, a testing time
反义an easy time, a smooth period
Starting university abroad was a challenging time, but it taught me to be independent.
在国外开始上大学是一段充满挑战的时期，但它教会了我独立。
55sand core
砂芯
讲解铸造术语，指铸型中形成内腔的砂制芯块，多用于工业制造语境
搭配sand core mold, remove a sand core, casting sand core
近义sand mold core, foundry core
派生core-making, core box
The foundry worker carefully removed the sand core from the metal casting.
铸造工人小心地从金属铸件中取出砂芯。
56viral infection
病毒性感染
讲解医学常用语，指由病毒引起的感染，区别于 bacterial infection
搭配contract a viral infection, treat a viral infection, viral infection rate
近义virus infection, viral disease
反义bacterial infection
派生antiviral, virology
A viral infection spread rapidly through the crowded school last winter.
去年冬天，一种病毒性感染在拥挤的学校里迅速传播。
57profound effects
深远的影响
讲解写作高频搭配，强调影响深刻持久，常用于社会、经济、教育类话题
搭配have profound effects on, exert profound effects, profound effects of
近义far-reaching effects, deep impact
反义negligible effects, minor effects
The new policy had profound effects on rural education across the country.
这项新政策对全国的农村教育产生了深远的影响。
58elevated highway
高架公路
讲解交通类名词，指架空的公路，常与 congestion, construction 等搭配
搭配build an elevated highway, along the elevated highway
近义elevated road, overpass
反义ground-level road
The elevated highway reduces traffic congestion in the city centre.
高架公路缓解了市中心的交通拥堵。
59be receptive to
对…愿意倾听，乐于接受
讲解be receptive to 表示愿意倾听并接受，后接名词或动名词，语气偏正式
搭配be receptive to change, be receptive to criticism, remain receptive to
近义be open to, be amenable to
反义be resistant to, be opposed to
派生receptivity, receptiveness
Good teachers are always receptive to new ideas and student feedback.
好老师总是乐于接受新想法和学生的反馈。
60neural changes
神经层面的变化
讲解学术用语，指神经系统结构或功能的变化，常见于心理学、医学文献
搭配observe neural changes, induce neural changes, neural changes in the brain
近义neurological changes, brain alterations
派生neuron, neural network
Scientists observed neural changes in the brain after months of meditation.
科学家观察到冥想数月后大脑发生了神经层面的变化。