📚 Year 8 Edexcel Economics: Key Vocabulary Memory Guide | 八年级爱德思经济：关键术语速记指南
Mastering economics starts with understanding its language. This guide breaks down the most important terms you will meet in your Year 8 Edexcel Economics course, giving you clear definitions, simple examples and clever memory hooks to help you recall them quickly in class and during assessments. Each term is explained both in English and in Chinese, so you can strengthen your bilingual economic vocabulary at the same time.
学好经济，首先要掌握它的语言。这份指南讲解你在八年级爱德思经济课程中会遇到的最重要的术语，提供清晰的定义、简单的例子和巧妙的记忆方法，帮助你快速记住并在课堂和测验中灵活运用。每个术语都配有中英文双语解释，让你同时提升双语经济词汇能力。
1. Scarcity and Choice | 稀缺性与选择
Scarcity means that there are limited resources but unlimited wants. Because we cannot have everything, we must make choices. This is the basic economic problem every society faces: deciding what to produce, how to produce it, and who gets the goods and services produced.
稀缺性指的是资源有限而欲望无限。正因如此，我们无法拥有一切，必须做出选择。这是每个社会都面临的基本经济问题：决定生产什么、如何生产，以及谁来消费这些商品和服务。
Memory tip: Think of a pizza that eight friends have to share. The pizza is scarce because there is only one, but everyone wants a slice. You must choose how to divide it. The word ‘scarce’ sounds like ‘scare’ — the limited amount can scare you into making a decision!
记忆窍门：想象一个八人共享的披萨。披萨是稀缺的，因为只有一个，可每个人都想要一块。你必须选择如何分配。英文 scarce 听起来像 scare（吓唬），有限的数量会“吓”你赶紧做决定！
2. 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 just the money you spend, but what you lose by not choosing the second-best option. Every decision has an opportunity cost.
机会成本是你在做选择时所放弃的次优选项的价值。它不仅是你花的钱，更是你放弃的选择所带来的损失。每个决定都有机会成本。
Example: If you have £10 and you choose to buy a book instead of a cinema ticket, the opportunity cost is the enjoyment you would have gained from the film. Remember: Opportunity Cost = the missed ‘op’ (opportunity) that costs you something.
例子：如果你有10英镑，选择买一本书而不是电影票，机会成本就是你看电影本可以获得的乐趣。记住：机会成本 = 错失的“机”会，让你付出了代价。
3. Needs and Wants | 需要与欲望
Needs are the basic items required for survival: food, water, shelter, clothing and healthcare. Wants are things that make life more enjoyable but are not essential, such as video games, holidays, or designer clothes. The difference helps us understand why scarcity exists — we always want more than we need.
需要是生存必备的基本物品：食物、水、住所、衣物和医疗。而欲望是让生活更舒适但并非必需的东西，比如电子游戏、度假或名牌服装。这一区别帮助我们理解稀缺性为何存在——我们想要的总是比需要的多。
Memory hook: ‘Need’ has four letters, like ‘life’. ‘Want’ has four letters, too — but think of ‘w’ as the extra ‘want’ that extends beyond basic needs. In Chinese, 需 has a ‘rain’ radical, hinting that water is a basic need.
记忆钩子：Need 有四个字母，life 也是四个字母。Want 也是四个字母，但开头的 ‘w’ 可以看成多出来的欲望，超过了基本需求。中文里“需”有雨字头，暗示水是基本需要。
4. Goods and Services | 商品与服务
Goods are physical items you can see and touch, such as apples, books, and shoes. Services are actions provided by others that you cannot hold, like haircuts, teaching, and bus rides. Together they make up all the things we buy in an economy.
商品是看得见摸得着的实物，比如苹果、书和鞋子。服务是别人为你提供的、无法触摸的行为，比如理发、教学和公交出行。两者一起构成了我们在经济中购买的所有东西。
| Goods / 商品 | Services / 服务 |
|---|---|
| Smartphone / 智能手机 | Mobile network / 移动网络服务 |
| Chair / 椅子 | Hair salon visit / 理发店服务 |
| Banana / 香蕉 | Bus journey / 公交行程 |
Tip: If you can drop it on your foot, it’s a good. If you cannot, it’s probably a service. That quick test works almost every time.
提示：如果掉下来会砸到脚，就是商品；如果不会，很可能就是服务。这个小测试几乎屡试不爽。
5. Factors of Production | 生产要素
The factors of production are the resources used to produce goods and services. They are often remembered by the acronym CELL: Capital (machinery, tools, buildings), Enterprise (the skill of combining other factors to start a business), Land (natural resources), and Labour (human effort).
生产要素是用来生产商品和服务的资源。通常用首字母缩略词 CELL 来记忆：资本（机器、工具、建筑物）、企业家才能（将其他要素组合起来创业的能力）、土地（自然资源）和劳动力（人类的工作努力）。
- Capital: Not just money, but productive equipment. Think of a tractor, a sewing machine, or a factory building.
- 资本：不只是金钱，而是生产设备。想想拖拉机、缝纫机或厂房。
- Enterprise: The risk-taking ability of an entrepreneur who organises production.
- 企业家才能：承担风险、组织生产的企业家能力。
- Land: All natural resources — soil, water, minerals, forests, and even fish in the sea.
- 土地：所有自然资源——土壤、水、矿物、森林，甚至海里的鱼。
- Labour: Physical and mental effort put into work. The workforce of a country.
- 劳动力：投入到工作中的体力和脑力劳动。一个国家的劳动力。
6. Supply and Demand | 供给与需求
Demand is the quantity of a product that consumers are willing and able to buy at different prices during a given time. Supply is the quantity that producers are willing and able to sell at different prices. Prices often rise when demand exceeds supply and fall when supply exceeds demand — the invisible hand of the market.
需求是消费者在不同价格下愿意并且能够购买的产品数量。供给是生产者在不同价格下愿意并且能够出售的数量。当需求超过供给时，价格往往上涨；当供给超过需求时，价格通常会下跌——这就是市场这只“看不见的手”在起作用。
Memory image: Picture a seesaw. On one side sits Demand, on the other Supply. The price is the middle fulcrum. When demand goes up and supply stays the same, the demand side gets heavier and the price tilts upward. When supply increases, the supply side gets heavier and the price tilts down.
记忆画面：想象一个跷跷板。一边坐着“需求”，另一边坐着“供给”。价格是中间的支点。需求上升而供给不变时，需求一端变重，价格向上倾斜。供给增加时，供给一端变重，价格向下倾斜。
7. Market and Price | 市场与价格
A market is any place or system where buyers and sellers come together to exchange goods and services. This does not have to be a physical space — an online platform is also a market. The price is the amount of money that a buyer pays to obtain a good or service. Prices act as signals: high prices tell producers to make more, while low prices tell consumers to buy more.
市场是买方和卖方聚集起来交换商品和服务的任何场所或系统。它不一定是实体空间——线上平台也是一个市场。价格是买方为获得商品或服务而支付的货币数量。价格发挥着信号的作用：高价告诉生产者多生产，低价告诉消费者多购买。
Key phrase: ‘Price is a signal wrapped in an incentive.’ A high price gives an incentive to producers to increase supply; a low price gives an incentive to consumers to increase demand.
关键词句：“价格既是信号，也是激励。”高价激励生产者增加供给；低价激励消费者增加需求。
8. Money | 货币
Money is any asset that is widely accepted as a medium of exchange for goods and services. It also serves as a store of value and a unit of account. Without money, people would have to barter — swapping one good for another directly, which is inefficient because it requires a double coincidence of wants.
货币是被普遍接受作为商品和服务交换媒介的任何资产。它还充当价值储藏手段和价值尺度。如果没有货币，人们将不得不进行物物交换——直接以一种商品交换另一种，这效率低下，因为需要双方的需求恰好匹配。
Think of the three jobs of money with the rhyme: ‘A medium to spend, a measure to compare, a store for later — money is everywhere.’
用一句顺口溜记住货币的三大职能：“交换媒介花出去，价值尺度比一比，价值储藏留以后——货币处处在。”
9. Budgeting | 预算
A budget is a plan of future income and spending over a period of time. Individuals, families, businesses and governments all use budgets to manage their finances. A budget helps you avoid overspending by showing you exactly how much money you expect to receive and how much you plan to spend. If your spending is greater than your income, you have a deficit; if your income is greater, you have a surplus.
预算是在一段时期内对未来收入和支出的计划。个人、家庭、企业和政府都使用预算来管理财务。预算帮助你避免超支，因为它明确显示你预期会收到多少钱以及计划支出多少钱。如果支出大于收入，就会出现赤字；如果收入大于支出，则产生盈余。
Memory phrase: ‘Budget is a money map — plan before you tap.’ Always know where your money is going.
记忆短语：“预算是一张金钱地图——花钱之前先规划。”始终要知道你的钱流向哪里。
10. Saving and Investing | 储蓄与投资
Saving means putting aside part of your income to use later, often by keeping it in a bank account where it earns interest. Investing is using your saved money to buy assets like shares, bonds, or property, hoping they will grow in value over time. Saving is generally safer, while investing involves more risk but the potential for higher returns.
储蓄是将一部分收入存起来以备将来使用，通常存放在银行账户中赚取利息。投资是使用你存下的钱购买股票、债券或房产等资产，寄望它们会随着时间增值。储蓄一般更安全，而投资风险更大，但可能带来更高的回报。
Simple rule: ‘Save for a rainy day, invest for a sunny future.’ Keep your emergency fund in savings, and think about investing for long-term goals.
简单规则：“为雨天而储蓄，为晴天而投资。”应急资金存银行，长期目标可考虑投资。
11. Taxes | 税收
Taxes are compulsory payments to the government, charged on income, profits, property and spending. They are the main source of government revenue and are used to pay for public services such as roads, schools, hospitals and defence. Common types include income tax, value-added tax (VAT) and corporation tax.
税收是向政府强制缴纳的款项，针对收入、利润、财产和消费征收。它是政府的主要收入来源，用于支付道路、学校、医院和国防等公共服务。常见的税种包括所得税、增值税和公司税。
Visual aid: Picture a large community cake. Everyone contributes a slice (tax), and that cake is shared back through public services for all to benefit. No tax — no cake!
视觉辅助：想象一块社区大蛋糕。每个人都贡献一片（税收），蛋糕又通过公共服务回馈给大家共享。没有税收，就没有蛋糕！
12. Trade | 贸易
Trade is the voluntary exchange of goods and services between individuals, businesses, or countries. It allows people to specialise in what they do best and then trade for other things they need. Exports are goods sent out of a country; imports are goods brought into a country. Trade works because of comparative advantage — countries benefit by producing goods they make most efficiently.
贸易是个人、企业或国家之间自愿进行的商品和服务交换。它使人们能够专注于自己最擅长的工作，然后通过贸易换取其他所需物品。出口是运往国外的商品；进口是从国外进入的商品。贸易之所以有效，是因为比较优势——各国生产自己最高效的商品，都能从中获益。
Rhyming reminder: ‘Export — send out of port. Import — bring into port.’ The direction is in the prefix: ‘ex-‘ means out, ‘im-‘ means in.
押韵提醒：出口是把货送出港，进口是把货运入港。前缀说明方向：’ex-‘ 表示向外，’im-‘ 表示向内。
Published by TutorHao | Economics Revision Series | aleveler.com
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