📚 Year 9 OCR Economics: Key Terms Memory Guide | Year 9 OCR 经济：关键术语速记指南
Getting to grips with the language of economics is the very first step towards thinking like an economist. In this guide, we will walk through the essential terms you will encounter in Year 9 OCR Economics, pairing each concept with simple explanations and practical memory hooks that make revision easier. Whether you are learning about scarcity, markets, or the factors of production, these bite-sized bilingual explanations will help you build a solid foundation for success in your exams.
掌握经济学的语言是像经济学家一样思考的第一步。在这份指南中，我们将带你梳理 Year 9 OCR 经济课程中最核心的术语，每个概念都配有简洁的讲解和实用的记忆钩子，让复习变得轻松。无论你是在学习稀缺性、市场还是生产要素，这些短小精悍的双语解释都能帮你打下扎实的基础，自信应试。
1. Scarcity and Choice | 稀缺与选择
Scarcity is the fundamental economic problem that arises because resources are limited while human wants are unlimited. It forces individuals, businesses, and governments to make choices about how to allocate their resources.
稀缺性是经济学中最根本的问题，它的产生是因为资源是有限的，而人类的欲望是无限的。这使得个人、企业和政府不得不对自己的资源如何分配做出选择。
Think of scarcity like having only £10 to spend at a café, but wanting a £5 sandwich, a £4 drink, and a £3 cake – you simply cannot have everything. This leads directly to the concept of opportunity cost.
你可以把稀缺性想象成口袋里只有 10 英镑，却在咖啡店里想要一份 5 英镑的三明治、一杯 4 英镑的饮料和一块 3 英镑的蛋糕——你不可能全都拥有。这就直接引出了机会成本的概念。
Opportunity cost is the next best alternative that you give up when making a choice. It is not the sum of all the things you miss out on, only the single most attractive alternative foregone.
机会成本是你做出选择时所放弃的次优替代品。它不是所有你错失的事物之和，而仅仅是被放弃的那个最具吸引力的单个选项。
A quick memory trick: 'Scarce resources, choose one, cost is what you could have done.' Linking the word 'scarce' to 'scarcity' and 'opportu-nity cost' to the 'opportunity you missed' helps embed these terms.
记忆小窍门：“资源稀缺，择一而行，成本即你所失之机。”把“scarce”和“scarcity”联系起来，再把“opportunity cost”与“你错过的机会”画上等号，能帮你牢牢记住这两个术语。
| Term | Meaning | 中文 |
|---|---|---|
| Scarcity | Limited resources vs. unlimited wants | 稀缺性 |
| Opportunity cost | The value of the next best alternative given up | 机会成本 |
2. Needs and Wants | 需要与欲望
A need is something essential for survival, such as food, clean water, shelter, and clothing. A want is something that we would like to have but is not necessary for staying alive, such as a video game, designer trainers, or a holiday abroad.
需要是维持生存所必需的东西，比如食物、干净的水、住所和衣物。欲望则是我们想要拥有，但并非维持生命所必需的东西，例如电子游戏、名牌运动鞋或出国度假。
In economics, it is crucial to distinguish between these two because resources used to produce wants could have been used to meet basic needs. The boundary, however, can change over time – a mobile phone might be seen as a need today for staying connected and safe, while a century ago it was unimaginable.
在经济学中，区分需要和欲望至关重要，因为用于生产欲望的资源本可以用来满足基本需要。不过，这条边界会随着时间推移而变化——今天，手机可能被视为保持联系和确保安全的一种需要，而一个世纪前这简直不可想象。
Use the simple 'S for survival' memory key: Need = Necessary for survival. Everything else that you simply desire is a want. When exam questions ask about needs and wants, immediately think about whether a person would survive without it.
用简单的“S 代表生存”记忆法：Need = Necessary for survival（生存必需）。其余你只是想要的东西都是欲望。考试中遇到关于需要和欲望的题目时，立刻想一想一个人没有这样东西是否还能活下去。
3. Goods and Services | 商品与服务
Goods are physical, tangible items that can be seen, touched, and stored. Examples include apples, textbooks, bicycles, and smartphones. Services are intangible actions or activities that are performed for someone else, such as haircuts, teaching, public transport, and banking.
商品是看得见、摸得着、能够储存的有形物品，例如苹果、教科书、自行车和智能手机。服务则是为他人完成的无形行为或活动，例如理发、教学、公共交通和银行服务。
You can test tangibility by asking: 'Can I drop it on my foot?' If yes, it is likely a good. If it would just make your foot feel educated or well-styled, it is a service.
你可以用一个简单的测试来判断是否有形：“如果我用它砸在脚上，会疼吗？”如果会，那很可能是一件商品。如果它只是让你的脚感觉受到了教育或者变得时髦，那就是一项服务。
Goods are further divided into consumer goods (used directly by individuals, like a chocolate bar) and capital goods (used to produce other goods, like a factory machine). Services can be personal (a doctor's consultation) or commercial (a delivery company).
商品可进一步分为消费品（由个人直接使用，比如巧克力棒）和资本品（用于生产其他商品，比如工厂机器）。服务则可以是个人服务（医生问诊）或商业服务（快递公司）。
An easy table to memorise:
一个便于记忆的表格：
| Type | Tangible? | Example |
|---|---|---|
| Good | Yes | Pencil, car, loaf of bread |
| Service | No | Haircut, train journey, insurance |
4. Economic Resources: The Factors of Production | 经济资源：生产要素
There are four factors of production, often remembered by the acronym CELL: Capital, Enterprise, Land, Labour. These are the inputs needed to produce any good or service.
生产要素共有四种，通常用首字母 CELL 来记忆：资本（Capital）、企业（Enterprise）、土地（Land）、劳动（Labour）。它们是生产任何商品或服务所需的投入。
- Land covers all natural resources – forests, minerals, water, oil, and the physical space where production takes place. The reward for land is rent.
- Labour is the human effort, both physical and mental, used in production. Its reward is wages.
- Capital refers to man-made tools, machinery, and equipment used to produce goods and services. It earns interest.
- Enterprise is the willingness and ability of entrepreneurs to take risks, combine the other three factors, and organise production. Its reward is profit.
- 土地涵盖所有自然资源——森林、矿产、水、石油以及生产所占用的实体空间。土地的报酬是租金。
- 劳动是生产中使用的人力，包括体力和脑力。它的报酬是工资。
- 资本指用于生产商品和服务的任何人造工具、机器和设备。它获取利息。
- 企业是企业家承担风险、组合其他三种要素并组织生产的意愿和能力。其报酬是利润。
A classic mnemonic: 'Land gets Rent, Labour earns Wages, Capital earns Interest, Enterprise earns Profit.' Turning it into a simple chant can lock this into your memory.
经典的口诀：“土地收租金，劳动拿工资，资本生利息，企业赚利润。”把它变成顺口溜就能牢牢印在脑子里。
5. Markets, Demand and Supply | 市场、需求与供给
A market is any place or mechanism where buyers and sellers meet to exchange goods or services. This does not have to be a physical location; online platforms like an auction site are just as much a market as a local farmers' market.
市场是指买卖双方相遇并交换商品或服务的任何场所或机制。这不一定是实体地点；像拍卖网站这样的在线平台，与本地农贸市场一样，都是市场。
Demand is the quantity of a product that consumers are willing and able to buy at different prices over a given period. The key phrase is 'willing and able' – wanting something without the money to pay for it does not count as effective demand in economics.
需求是指在一定时期内，消费者在不同价格水平上愿意并且能够购买的产品数量。关键词是“愿意并且能够”——仅仅想要某样东西却没有足够的钱来支付，在经济学中并不算作有效需求。
Supply is the quantity of a product that producers are willing and able to offer for sale at different prices over a given period. For supply, the focus shifts to the producer's willingness and ability to bring goods to market.
供给是指在一定时期内，生产者愿意并且能够以不同价格出售的产品数量。说到供给，焦点就转移到了生产者将商品投放市场的意愿和能力上。
The law of demand states that as price falls, the quantity demanded generally rises (an inverse relationship). The law of supply states that as price rises, the quantity supplied generally rises (a direct relationship).
需求定律指出，随着价格下降，需求量通常会上升（反向关系）。供给定律则指出，随着价格上升，供给量通常也会上升（正向关系）。
A simple arrow reminder: P↓ → Qd↑ (demand); P↑ → Qs↑ y). Drawing little arrows in your revision notes can trigger visual recall during an exam.
简单的箭头提示法：P↓ → Qd↑（需求）；P↑ → Qs↑（供给）。在复习笔记里画上小箭头，考试时就能唤起视觉记忆。
6. Equilibrium Price and the Market Mechanism | 均衡价格与市场机制
Equilibrium price is the price where the quantity demanded by consumers exactly matches the quantity supplied by producers. At this point, the market is said to 'clear' – there is no surplus (excess supply) and no shortage (excess demand).
均衡价格是指消费者需求的数量与生产者供给的数量恰好相等时的价格。在这个点上，市场被认为是“出清”的——既没有剩余（超额供给），也没有短缺（超额需求）。
When the price is set above equilibrium, there will be a surplus: producers supply more than consumers are willing to buy. To sell their unsold stock, producers tend to lower the price, moving back towards equilibrium.
当价格高于均衡点时，就会出现剩余：生产者供应的数量超过了消费者愿意购买的数量。为了卖掉积压的库存，生产者往往会降低价格，使市场重新向均衡靠拢。
When price is below equilibrium, a shortage occurs: consumers want to buy more than producers are supplying. Some consumers will bid the price up, again pushing the market back towards equilibrium. This self-correcting behaviour is called the price mechanism.
当价格低于均衡点时，则会出现短缺：消费者想买的比生产者提供的多。部分消费者就会抬高价格，再次推动市场回归均衡。这种自我修正的行为就叫作价格机制。
Think of the price mechanism as an invisible hand that rations scarce goods, signals where resources should move, and gives incentives for producers and consumers to change their behaviour. The phrase 'rationing, signalling, incentive' is a handy three-word checklist for exam answers.
你可以把价格机制想象成一只看不见的手：它配给稀缺商品、传递资源去向的信号，并向生产者和消费者提供改变行为的激励。“配给、信号、激励”这三个词是考试答题时非常好用的检查清单。
7. Specialisation and the Division of Labour | 专业化与劳动分工
Specialisation occurs when individuals, firms, regions, or countries concentrate on producing a narrow range of goods or services. Rather than each person trying to make everything they need, people focus on what they do best and then trade with others.
专业化指的是个人、企业、地区或国家集中力量生产少数种类的商品或服务。人们不再试图自给自足地生产所有需要的东西，而是专注于自己最擅长的领域，然后与他人进行交换。
The division of labour is a particular form of specialisation where the production process is broken down into many small tasks, each performed by a different worker. Adam Smith’s famous example of a pin factory showed how breaking the job into 18 separate steps could massively increase output per worker.
劳动分工是专业化的一种特殊形式，它将生产过程分解成许多细小工序，每个工序由不同的工人完成。亚当·斯密著名的制针工厂例子展示出，把制针工作拆分成 18 个独立步骤，如何使每名工人的产量大幅提高。
Advantages of specialisation and division of labour include higher productivity, lower unit costs, and the development of specific skills. However, disadvantages can include worker boredom, lack of flexibility, and over-dependence on one product or market.
专业化和劳动分工的优势包括更高的生产率、更低的单位成本以及专门技能的发展。然而，其劣势可能包括工人感到枯燥乏味、缺乏灵活性，以及过度依赖某一种产品或市场。
To remember the pros and cons, use the 3 E's – Efficiency, Expertise, Economies of scale – versus the 3 R's – Repetition, Rigidity, Risk. This is a powerful tool for structuring longer answers.
要记住利弊，可以用 3E 概括——Efficiency（效率）、Expertise（专长）、Economies of scale（规模经济），再用 3R 概括缺点——Repetition（重复单调）、Rigidity（僵化）、Risk（风险）。这是组织长答案的有力工具。
8. The Economy: Sectors and Stakeholders | 经济：部门与利益相关者
An economy is the system that tries to solve the problem of scarcity. It involves all the production, distribution, and consumption activities in a country or region. Economies can be divided into three main sectors: primary, secondary, and tertiary.
经济是一个试图解决稀缺问题的系统，它涵盖了一个国家或地区内所有的生产、分配和消费活动。经济可以划分为三个主要部门：第一产业、第二产业和第三产业。
- Primary sector: extraction of raw materials – farming, fishing, mining, forestry.
- Secondary sector: manufacturing and construction – turning raw materials into finished goods, like car factories and housebuilding.
- Tertiary sector: provision of services – retail, education, healthcare, tourism, banking.
- 第一产业：原材料开采——农业、渔业、采矿业、林业。
- 第二产业：制造和建筑——将原材料加工为成品，例如汽车厂和房屋建造。
- 第三产业：提供服务——零售、教育、医疗、旅游、金融等。
Stakeholders are all the individuals, groups, or organisations that have an interest in the activities and decisions of a business. Key stakeholders include owners (shareholders), employees, customers, suppliers, the local community, and the government.
利益相关者是指所有对企业的活动和决策有利害关系的个人、团体或组织。关键的利益相关者包括所有者（股东）、员工、顾客、供应商、当地社区和政府。
A helpful visual is to draw a circle with the business in the centre and spokes pointing to each stakeholder group, noting what each wants from the business (e.g., owners want profit, employees want secure wages, customers want quality and low prices). This diagram makes the interconnectedness clear.
一个有用的视觉工具是画一个圆圈，将企业放在中心，用辐射线指向各个利益相关者群体，并标注每个群体希望从企业获得什么（例如，所有者追求利润，员工想要稳定的工资，消费者要求品质和低价格）。这张图能让相互依赖的关系一目了然。
9. Costs, Revenue and Profit | 成本、收入与利润
Costs refer to the expenses that a business incurs in order to produce goods or services. Fixed costs do not vary with the level of output in the short run – rent, insurance, and salaries of permanent staff are typical examples. Variable costs, on the other hand, change directly with output, such as raw materials and energy used in production.
成本是指企业为生产商品或服务而发生的支出。固定成本在短期内不会随产出水平的变动而变动——租金、保险和正式员工的薪水都是典型的例子。而变动成本则直接随产量变化，例如原材料和生产中所用的能源。
Total cost is simply fixed costs plus variable costs. If a bakery pays £1000 a month in rent (fixed) and spends £2 on flour per loaf (variable), its total cost for baking 500 loaves is £1000 + (500 × £2) = £2000.
总成本就是固定成本与变动成本之和。假设一家面包店每月支付 1000 英镑房租（固定成本），每条面包花费 2 英镑面粉（变动成本），那么烤制 500 条面包的总成本就是 1000 英镑 + (500 × 2 英镑) = 2000 英镑。
alculated as price per unit multiplied by quantity sold. If the bakery sells each loaf for £5 and sells all 500, total revenue is £5 × 500 = £2500.
收入是指企业通过销售产品所获得的进账。计算公式是单位价格乘以销售数量。如果面包店每条面包卖 5 英镑，且 500 条全部售出，那么总收入就是 5 英镑 × 500 = 2500 英镑。
t is the difference between total revenue and total costs. In the bakery example, profit = £2500 − £2000 = £ k-taking and enterprise, and it provides an incentive for businesses to innovate and grow.
利润是总收入与总成本之间的差额。在面包店的例子中，利润 = 2500 英镑 − 2000 英镑 = 500 英镑。利润是对承担风险和企业家精神的回报，它激励着企业去创新和发展。
A simple equation frame to memorise:
Profit = Total Revenue − Total Costs
This formula alone can help you unpack a wide range of exam scenarios around pricing, costs, and business decisions.
记住这个简单的等式框架：利润 = 总收入 − 总成本。仅凭这个公式，你就能拆解考试中许多围绕定价、成本和商业决策的场景。
10. Economic Growth, Inflation, and Unemployment | 经济增长、通货膨胀与失业
These three terms are central to understanding the health of a whole economy. Economic growth refers to an increase in the amount of goods and services produced in a country over a period of time. It is usually measured by the percentage change in real Gross Domestic Product (GDP).
这三个术语是理解整体经济运行状况的核心。经济增长是指一国在一定时期内生产的商品和服务数量的增加，通常用实际国内生产总值（GDP）变化的百分比来衡量。
A growing economy typically means more jobs, higher incomes, and improved standards of living. However, if growth is too fast, it can cause inflation – a sustained rise in the general level of prices for goods and services, which reduces the purchasing power of money.
经济持续增长通常意味着更多就业岗位、更高收入和更好的生活水平。但如果增长过快，则可能引发通货膨胀——商品和服务总体价格水平持续上升，使得货币的购买力下降。
Unemployment describes the situation where people who are willing and able to work cannot find a job. Economists count someone as unemployed only if they are actively seeking work. High unemployment means an economy is not using its labour resources fully, and it can lead to lower output and social hardship.
失业描述的是那些愿意并且有能力工作的人却找不到工作的状况。经济学家仅将正在积极寻找工作的人计入失业人口。高失业率意味着经济没有充分利用其劳动力资源，可能导致产出下降和社会困难。
A simple relationship triangle can help: countries often aim for steady growth, low and stable inflation, and low unemployment. These three goals sometimes conflict – for example, reducing inflation may temporarily increase unemployment, a trade-off known as the Phillips curve trade-off.
一个简单的关系三角图可以帮助记忆：各国通常致力于实现平稳增长、低而稳定的通胀和低失业率。这三个目标有时会相互冲突——例如，降低通货膨胀可能会暂时推高失业率，这就是被称为菲利普斯曲线权衡的一种取舍关系。
Remember the 3 key indicators: Growth, Prices, Jobs. Linking them to your own experience – prices you see, jobs in your area, news about GDP – will make these abstract terms far more concrete.
记住这三个关键指标：增长、价格、就业。将它们与你的自身体验——你看到的价格、你所在的地区的工作机会、有关 GDP 的新闻——联系起来，会让这些抽象术语变得非常具体。
11. Budgets, Saving, and Borrowing | 预算、储蓄与借贷
A budget is a financial plan that shows expected income and spending over a period of time. Governments, businesses, and individuals all use budgets to manage money. A balanced budget means income equals spending; a surplus means income is greater; a deficit means spending exceeds income.
预算是一份显示某个时期内预期收入和支出的财务计划。政府、企业和个人都使用预算来管理资金。平衡预算意味着收入等于支出；盈余意味着收入大于支出；赤字则意味着支出超过收入。
Saving is the portion of income that is not spent on current consumption. It provides a safety net for emergencies and can be used to fund future investments. In economic terms, saving is a leakage from the circular flow of income, but it is crucial because banks can then lend these savings to businesses that want to invest.
储蓄是收入中未用于当前消费的部分。它为紧急情况提供了安全网，并且可以用来为未来的投资提供资金。在经济学术语中，储蓄是收入循环流动中的一种漏出，但它至关重要，因为银行可以将这些储蓄贷给希望投资的企业。
Borrowing means obtaining money now with a promise to repay it in the future, usually with interest. Borrowing allows individuals and businesses to make large purchases or invest before they have accumulated enough savings. However, too much borrowing can lead to unsustainable debt.
借贷是指现在获得资金，并承诺在未来偿还，通常还要支付利息。借贷使个人和企业在尚未累积足够储蓄时，就能进行大额消费或投资。然而，过度借贷可能导致难以承受的债务。
The cost of borrowing is the interest rate, which is sometimes called the 'price of money'. A useful memory link is: 'When interest rates rise, borrowing becomes more expensive and saving becomes more rewarding.'
借贷的成本是利率，利率有时也被称为“货币的价格”。一条有用的记忆链接是：“当利率上升时，借贷变得更昂贵，而储蓄则变得更有吸引力。”
12. Government Economic Tools: Tax and Spend | 政府的经济工具：税收与支出
The government influences the economy mainly through fiscal policy – that is, decisions about taxation and public spending. Taxation is the compulsory transfer of money from individuals and businesses to the government. It funds public services such as healthcare, education, defence, and infrastructure.
政府主要通过财政政策来影响经济——即关于税收和公共支出的决策。税收是个人和企业向政府强制转移的金钱，它资助医疗、教育、国防和基础设施等公共服务。
Taxes can be direct, like income tax and corporation tax, which are levied on income and profits. They can also be indirect, like VAT (Value Added Tax) on goods and services, which is included in the price we pay at the till.
税收可以是直接税，比如对收入和利润课征的所得税和公司税。也可以是间接税，比如对商品和服务征收的增值税（VAT），它已经包含在我们在收银台支付的价格当中。
Government spending injects money back into the circular flow. It can build hospitals, pay teachers, provide welfare benefits, and invest in transport. When the government spends more than it collects in taxes, it runs a budget deficit and may need to borrow.
政府支出则将资金重新注入经济循环流中。它可以用来建造医院、支付教师工资、提供福利津贴以及投资于交通。当政府支出超过其税收收入时，就会出现预算赤字，可能就需要借款。
A quick visual: think of tax as a leak out of the economy, while government spending is an injection back in. The balance between these two helps manage economic activity and influences growth, employment, and inflation.
快速上手的视觉法：把税收看作是经济中的漏出，而政府支出则是重新注入。两者之间的平衡有助于管理经济活动，并影响增长、就业和通货膨胀。
Memorising the fiscal policy phrase: 'Tax less, spend more = boost the economy; tax more, spend less = cool it down' (expansionary vs. contractionary fiscal policy). This contrast often appears in multiple-choice and short-answer questions.
记住财政政策的口诀：“少收税、多支出 = 刺激经济；多收税、少支出 = 给经济降温”（扩张性财政政策与紧缩性财政政策的对比）。这种对比经常出现在选择题和简答题中。
Published by TutorHao | Economics Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图