📚 KS3 CAIE Economics: Key Vocabulary Quick Memorization Guide | KS3 CAIE 经济：词汇术语速记指南
Mastering the language of economics is your first step towards understanding how the world works. This guide presents essential KS3 CAIE Economics terms in clear, bite-sized pairs – each English definition is immediately followed by its Chinese equivalent to help you memorise and recall faster. Whether you are preparing for a test or simply curious about the subject, these key words will build your confidence.
掌握经济学的语言是你理解世界如何运作的第一步。本指南以清晰的、成对的形式呈现 KS3 CAIE 经济学的核心术语——每个英文定义后紧跟其中文对应解释，帮助你更快记忆和回忆。无论你是在备考还是单纯对这门学科感到好奇，这些关键词汇都将为你建立信心。
1. Basic Economic Concepts | 基本经济概念
Economics is the social science that examines how people use scarce resources to produce goods and services and distribute them among different groups.
经济学是研究人们如何利用稀缺资源生产货物和服务并在不同群体间进行分配的社会科学。
Scarcity means that there are never enough resources to satisfy all human wants and needs, so choices must be made.
稀缺性意味着永远没有足够的资源来满足人类所有的欲望和需要，因此必须做出选择。
A choice is the decision between alternative uses of limited resources; every choice involves giving up something else.
选择是在有限资源的替代用途之间做出的决定；每一个选择都意味着放弃其他东西。
2. Needs and Wants | 需要与欲望
Needs are goods or services that are essential for survival, such as food, water, shelter and clothing.
需要是生存所必需的货物或服务，例如食品、水、住所和衣物。
Wants are desires for goods and services that are not necessary for survival but make life more comfortable or enjoyable, like a smartphone or a holiday.
欲望是对非生存必需但能使生活更舒适或愉快的货物和服务的渴望，比如智能手机或度假。
Because wants are unlimited while resources are limited, economics helps us prioritise how to use what we have.
由于欲望是无限的而资源是有限的，经济学帮助我们确定如何优先使用我们所拥有的资源。
3. Goods and Services | 货物与服务
Goods are tangible items that can be seen and touched, such as books, bicycles and apples. They can be durable (long-lasting) or non-durable (used up quickly).
货物是可以看见和触摸的有形物品，例如书本、自行车和苹果。它们可以是耐用品（使用时间长的）或非耐用品（很快用完的）。
Services are intangible activities provided by others, such as education, haircuts, or public transport. You cannot hold a service in your hand.
服务是由他人提供的无形活动，例如教育、理发或公共交通。你无法将服务拿在手中。
Both goods and services are produced to satisfy people’s needs and wants, and they often work together – for instance, a smartphone (good) requires network coverage (service).
货物和服务都是为了满足人们的需求和欲望而生产的，并且经常相互配合——例如，一部智能手机（货物）需要网络覆盖（服务）。
4. Opportunity Cost | 机会成本
Opportunity cost is the value of the next best alternative that you give up when making a choice. It is not simply the money spent, but what you could have gained from the second-best option.
机会成本是你在做出选择时放弃的次优选项的价值。它不仅是你花费的金钱，而是你本可以从第二好的选择中获得的收益。
For example, if you spend one hour studying economics instead of playing football, the opportunity cost is the enjoyment and exercise you miss.
例如，如果你花一小时学习经济学而不是踢足球，机会成本就是你错过的乐趣和锻炼。
Understanding opportunity cost helps individuals, businesses and governments make more informed decisions by weighing what is sacrificed.
理解机会成本有助于个人、企业和政府通过权衡所牺牲的东西来做出更明智的决策。
5. Factors of Production | 生产要素
Factors of production are the resources used to create goods and services. They are traditionally grouped into four categories: land, labour, capital and enterprise.
生产要素是用于创造货物和服务的资源。它们传统上分为四类：土地、劳动力、资本和企业。
Land refers to all natural resources, including soil, minerals, water and forests. It provides the raw materials for production.
土地指所有自然资源，包括土壤、矿物、水和森林。它为生产提供原材料。
Labour is the human effort, both physical and mental, used in production. The quality of labour depends on education and skills, known as human capital.
劳动力是用于生产的人体力与脑力劳动。劳动力的质量取决于教育和技能，这被称为人力资本。
Capital means man-made resources used to make other goods, such as machinery, tools, factories and computers. This is different from financial capital (money).
资本是指用于制造其他货物的人造资源，如机器、工具、工厂和电脑。这不同于金融资本（货币）。
Enterprise is the ability to combine the other three factors, take risks and innovate. The person who does this is an entrepreneur.
企业是将其他三种要素结合、承担风险和创新的能力。从事这项工作的人就是企业家。
6. Demand and Supply | 需求与供给
Demand is the quantity of a good or service that consumers are willing and able to buy at different prices over a given time period. Generally, as price rises, quantity demanded falls – this is the law of demand.
需求是在一定时期内消费者在不同价格下愿意并能够购买的货物或服务的数量。通常，当价格上升时，需求量下降——这就是需求定律。
Supply is the quantity of a good or service that producers are willing and able to offer for sale at different prices. Typically, higher prices encourage greater supply.
供给是生产者在不同价格下愿意并能够出售的货物或服务的数量。通常，价格越高，供给量越大。
Market equilibrium occurs where the quantity demanded equals the quantity supplied. At this point, there is no shortage or surplus, and the price tends to be stable.
市场均衡发生在需求量等于供给量的时候。在这一点上，没有短缺或过剩，价格趋于稳定。
If demand increases while supply stays the same, prices tend to rise and vice versa. These shifts help explain many real-world price changes.
如果需求增加而供给保持不变，价格往往上涨，反之亦然。这些变化有助于解释许多现实世界的价格变动。
7. Markets and Price Mechanism | 市场与价格机制
A market is any arrangement that allows buyers and sellers to exchange goods, services or resources. Markets can be physical (like a local bazaar) or online (like an e-commerce platform).
市场是允许买方和卖方交换货物、服务或资源的任何安排。市场可以是实体的（如当地集市）或在线的（如电子商务平台）。
The price mechanism describes how the forces of demand and supply interact to determine prices and allocate scarce resources. It acts as a signal to consumers and producers.
价格机制描述了需求和供给如何相互作用来决定价格并分配稀缺资源。它对消费者和生产者起到信号作用。
When a good is scarce, its price rises, signaling producers to supply more and consumers to buy less, bringing the market back towards balance.
当一种货物稀缺时，其价格上升，这向生产者发出增加供给的信号，同时促使消费者减少购买，使市场恢复平衡。
Competition among sellers can lead to better quality and lower prices, while competition among buyers can drive prices up.
卖者之间的竞争可以带来更高的质量和更低的价格，而买者之间的竞争则可能推高价格。
8. Money and Banking | 货币与银行
Money is any item that is widely accepted as payment for goods and services. It serves as a medium of exchange, a unit of account, a store of value and a standard of deferred payment.
货币是任何被广泛接受作为货物和服务支付手段的物品。它充当交换媒介、计价单位、价值储藏和延期支付标准。
Banks are financial institutions that accept deposits, make loans and provide other financial services. Commercial banks help individuals and businesses save and borrow.
银行是接受存款、发放贷款和提供其他金融服务的金融机构。商业银行帮助个人和企业储蓄和借贷。
Interest is the cost of borrowing money or the reward for saving. When you deposit money in a bank, you earn interest; when you take a loan, you pay interest.
利息是借入资金的成本或储蓄的回报。当你在银行存款时，你会获得利息；当你贷款时，你需要支付利息。
Central banks, like the Bank of England or the People’s Bank of China, manage a country’s money supply and aim to keep prices stable.
中央银行，如英格兰银行或中国人民银行，管理一个国家的货币供应并旨在保持价格稳定。
9. International Trade | 国际贸易
International trade is the exchange of goods and services across national borders. Exports are goods sold to other countries, while imports are goods bought from abroad.
国际贸易是跨越国界的货物和服务交换。出口是卖给其他国家的货物，进口是从国外购买的货物。
Countries trade because they have different resources, skills and natural advantages. Specialisation allows a country to focus on producing what it makes best, then trade for other products.
国家之间进行贸易是因为它们拥有不同的资源、技能和自然优势。专业化使一个国家专注于生产自己最擅长的产品，然后通过贸易换取其他产品。
Comparative advantage is the ability to produce a good at a lower opportunity cost than another producer. This concept explains why trade can benefit all parties, even if one country is better at producing everything.
比较优势是指以低于其他生产者的机会成本生产某种货物的能力。这一概念解释了为什么即使一个国家在生产所有东西方面都更出色，贸易也能使各方受益。
Exchange rate is the price of one currency in terms of another. When a currency strengthens, imports become cheaper but exports become dearer for foreign buyers.
汇率是一种货币用另一种货币表示的价格。当一种货币走强时，进口变得更便宜，但出口对外国买家来说变得更昂贵。
10. Economic Indicators and Government Aims | 经济指标与政府目标
Gross Domestic Product (GDP) is the total value of all goods and services produced within a country in a year. It is a common measure of economic growth.
国内生产总值（GDP）是一国在一年内生产的所有货物和服务的总价值。它是衡量经济增长的常用指标。
Inflation is the sustained rise in the general price level over time. When inflation is high, money loses purchasing power, meaning each unit of currency buys fewer goods.
通货膨胀是指总体价格水平在一段时间内持续上升。通胀高时，货币购买力下降，意味着每单位货币能购买的货物减少。
Unemployment refers to people who are willing and able to work but cannot find a job. The unemployment rate measures the percentage of the labour force that is jobless.
失业指愿意并且能够工作但找不到工作的人。失业率衡量劳动力中失业人口所占的百分比。
Governments often aim for stable economic growth, low inflation, full employment and a balanced trade position. These goals help create a healthy economy for all.
政府通常追求稳定的经济增长、低通胀、充分就业和平衡的贸易状况。这些目标有助于为所有人创造一个健康的经济环境。
Economic policy tools such as taxation and government spending (fiscal policy) or managing interest rates and money supply (monetary policy) are used to influence these indicators.
诸如税收和政府支出（财政政策）以及管理利率和货币供应（货币政策）等经济政策工具被用来影响这些指标。
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