📚 Year 9 WJEC Economics: Glossary & Terminology Quick-Memorisation Guide | Year 9 WJEC 经济：词汇术语速记指南
Mastering economic vocabulary is the first step to success in your Year 9 WJEC course. This guide breaks down every key term with clear definitions, memorable tricks, and practical examples. Use it for quick daily revision and watch your confidence grow before tests.
掌握经济学术语是在 Year 9 WJEC 课程中取得成功的第一步。本指南通过清晰的定义、好记的窍门和实用例子拆解每个关键术语。用它进行每日快速复习，在考试前你会看到自信的提升。
1. Scarcity and Choice | 稀缺与选择
Scarcity is the fundamental economic problem: resources are limited but human wants are unlimited. This forces individuals, businesses and governments to make choices about how to allocate what is available. Without scarcity, there would be no need for economics.
稀缺性是基本的经济问题：资源有限而人类的欲望无限。这迫使个人、企业和政府就如何分配可用资源做出选择。如果没有稀缺性，就不需要经济学。
Memory aid: 'Scarce' sounds like 'scars' — resources leave scars if we overuse them. Picture a drought where water is scarce, forcing tough choices between drinking, farming and industry.
记忆辅助：'Scarce' 听起来像 'scars'（伤疤）——资源过度使用会留下伤疤。想象一场干旱，水资源稀缺，迫使人们在饮用、农业和工业之间做出艰难选择。
2. Opportunity Cost | 机会成本
Opportunity cost is the value of the next best alternative you give up whenever you make a choice. It is not all alternatives combined, only the single most valued option forgone. This concept lies at the very heart of economic reasoning.
机会成本是每次做出选择时你所放弃的次优替代品的价值。它不是所有替代品的总和，而是你所放弃的选项中唯一最看重的那一个。这一概念是经济推理的核心。
Opportunity Cost = Value of the Next Best Alternative (forgone)
机会成本 = 所放弃的次优选项的价值
If you spend your Saturday afternoon revising economics instead of going to the cinema, the opportunity cost is the enjoyment and relaxation you would have gained from the film. Always ask: 'What am I giving up?'
如果你周六下午复习经济学而不是去看电影，机会成本就是你从电影中本可获得的乐趣和放松。始终问自己：“我放弃的是什么？”
3. Needs and Wants | 需要与欲望
Needs are goods and services essential for survival, such as nutritious food, clean water, shelter and basic clothing. Without them, a person cannot live a healthy life. Wants are items we desire to make life more comfortable or enjoyable but that are not strictly necessary for staying alive.
需要是生存所必需的商品和服务，例如营养食物、清洁水、住所和基本衣物。没有它们，人就无法健康地生活。欲望是我们渴望让生活更舒适或更愉快但并非生存必需的物品。
Memory trick: 'Needs are Necessities, Wants are Wishes.' Imagine packing a survival backpack with only essential needs, then making a separate wish‑list of the latest phone, expensive trainers and concert tickets.
记忆窍门：“需要是必需品，欲望是愿望。” 想象打包一个生存背包，里面只有基本需要，然后另列一个愿望清单，包含最新手机、昂贵运动鞋和演唱会门票。
4. Factors of Production | 生产要素
Factors of production are the inputs used to create goods and services. They are grouped into four categories: Land, Labour, Capital and Enterprise. Every product you use is a result of combining these factors.
生产要素是用于创造商品和服务的投入。它们分为四类：土地、劳动、资本和企业家才能。你使用的每一个产品都是这些要素结合的结果。
Land covers all natural resources (minerals, forests, water). Labour is the human effort, both physical and mental. Capital includes man‑made tools, machinery and factories used in production. Enterprise refers to the entrepreneurial ability to organise the other three factors and bear risk.
土地指所有自然资源（矿产、森林、水）。劳动是人的体力和脑力付出。资本包括生产中使用的人造工具、机器和工厂。企业家才能指组织其他三种要素并承担风险的创业能力。
Acronym: 'L.L.C.E.' (Lucky Learners Can Excel). Visualise a baker: land provides wheat, labour kneads dough, capital is the oven, and enterprise is the decision to open a bakery.
首字母缩略词：“L.L.C.E.”。想象一个面包师：土地提供小麦，劳动揉面，资本是烤箱，企业家才能是决定开一家面包店。
5. Specialisation and Division of Labour | 专业化与劳动分工
Specialisation means focusing on a narrow range of tasks or products where one has an advantage, rather than trying to do everything. Division of labour breaks down a production process into many small, separate operations, each handled by a different worker.
专业化意味着专注于自己有优势的狭窄任务或产品范围，而不是什么都做。劳动分工将生产流程分解为许多小而独立的工序，每个工序由不同的工人完成。
Adam Smith's pin factory is the classic example: one worker draws out the wire, another straightens it, another cuts it, another sharpens the point. Because each worker becomes highly skilled at one tiny task, overall output per worker soars. This rise in productivity is the main benefit.
亚当·斯密的别针工厂是经典例子：一个工人拉丝，另一个弄直，另一个切割，另一个磨尖。由于每个工人在微小任务上变得高度熟练，每个工人的总产出飙升。生产力的这种提升是主要好处。
Memory phrase: 'Specialisation makes you a specialist, like a cardiologist focusing only on hearts.' Think how a fast‑food kitchen divides jobs — grilling, assembling, serving — to serve customers quickly.
记忆短语：“专业化让你成为专家，就像心脏病专家只专注于心脏。”想想快餐厨房如何分工——烤制、组装、服务——来快速服务顾客。
6. Markets and Prices | 市场与价格
A market is any setup where buyers and sellers can exchange goods, services or resources. It does not need a physical location; online platforms, telephone negotiations and even informal meet‑ups count as markets.
市场是买卖双方可以交换商品、服务或资源的任何安排。它不需要实体场所；在线平台、电话谈判甚至非正式碰头都算作市场。
Prices in a market are determined by the interaction of demand and supply. When buyers want more of a product than sellers offer, prices tend to rise. When sellers offer more than buyers want, prices tend to fall. This price mechanism allocates scarce resources without anyone giving central commands.
市场价格由需求与供给的相互作用决定。当买方想要的商品数量超过卖方提供的数量，价格往往上涨。当卖方提供的数量超过买方想要的数量，价格往往下跌。这种价格机制无需任何人发出中央指令即可分配稀缺资源。
Visual memory: an auction room. Many bidders chasing a single painting pushes the price up; if the room is nearly empty and many paintings are for sale, the auctioneer drops the starting price. This mirrors demand and supply in action.
视觉记忆：拍卖厅。众多竞拍者追逐一幅画作推高价格；如果厅内几乎无人而有许多画作待售，拍卖师会降低起拍价。这反映了需求和供给的实际运作。
7. Demand and Supply | 需求与供给
Demand is the quantity of a good or service that consumers are willing and able to purchase at various prices over a specific period. The law of demand states that, ceteris paribus, as price rises, quantity demanded falls — an inverse relationship.
需求是指在一定时期内，消费者在不同价格下愿意且能够购买的商品或服务数量。需求定律指出，在其他条件不变的情况下，价格上升，需求量下降——一种反向关系。
Supply is the quantity that producers are willing and able to offer for sale at various prices. The law of supply states that, ceteris paribus, as price rises, quantity supplied rises — a direct relationship.
供给是指生产者在不同价格下愿意且能够提供出售的数量。供给定律指出，在其他条件不变的情况下，价格上升，供给量上升——一种正向关系。
Remember: a change in the good's own price causes a movement along the curve, while changes in other factors (income, technology, costs) shift the entire demand or supply curve. This distinction is crucial for WJEC exam questions.
记住：商品自身价格的变化引起沿曲线的移动，而其他因素（收入、技术、成本）的变化导致整条需求或供给曲线平移。这一区别对 WJEC 考试题至关重要。
A quick comparison table to lock in the differences:
一个快速对比表格以锁定不同点：
| Feature | Demand | Supply |
|---|---|---|
| Law | Price ↑, Quantity Demanded ↓ (Inverse) | Price ↑, Quantity Supplied ↑ (Direct) |
| Curve shape | Downward sloping | Upward sloping |
| Main shifters | Income, tastes, prices of substitutes/complements, advertising | Costs of production, technology, taxes, subsidies, number of sellers |
8. Money and Its Functions | 货币及其职能
Money is any asset that is widely accepted as a medium of exchange. It must perform four key functions: medium of exchange (avoids barter), unit of account (measures value), store of value (can be saved and used later), and standard of deferred payment (allows borrowing and lending).
货币是被广泛接受作为交换媒介的任何资产。它必须履行四项关键职能：交换媒介（避免物物交换）、计价单位（衡量价值）、价值储藏（可以储蓄并以后使用）和延期支付标准（允许借贷）。
Acronym: 'M.U.S.S.' — Medium, Unit, Store, Standard. Visualise a £10 note stamped with the letters M.U.S.S. and recall each function. For WJEC, be ready to explain why shells or cows fail as good money; they lack divisibility, durability or acceptance.
首字母缩略词：“M.U.S.S.”——媒介、单位、储藏、标准。想象一张 10 英镑钞票上印着 M.U.S.S. 字母，并回想每个职能。对于 WJEC，准备好解释为何贝壳或奶牛不能成为好的货币；它们缺乏可分割性、耐久性或普遍接受性。
9. Inflation and Deflation | 通货膨胀与通货紧缩
Inflation is a sustained increase in the general price level of goods and services. It erodes the purchasing power of money — each pound buys fewer goods than before. Deflation is a sustained decrease in the general price level, which might sound good but often accompanies falling wages and rising unemployment.
通货膨胀是商品和服务总体价格水平的持续上涨。它侵蚀货币的购买力——每英镑能买到的商品比以前少。通货紧缩是总体价格水平的持续下降，听起来可能不错，但常常伴随着工资下降和失业率上升。
Balloon memory aid: 'Inflation' inflates prices like a balloon getting bigger. 'Deflation' lets air out and shrinks the economy. The UK government targets a 2% inflation rate (CPI) to keep the economy stable. Moderate inflation is seen as a sign of a growing economy.
气球记忆辅助：'Inflation' 像气球吹气一样使价格膨胀。'Deflation' 放气使经济收缩。英国政府将消费者价格指数 (CPI) 的通胀目标设定为 2% 以保持经济稳定。温和通胀被视为经济增长的迹象。
For Year 9, focus on who wins and loses: savers lose purchasing power during inflation, while borrowers may repay loans with money that is worth less. People on fixed incomes suffer.
对 9 年级而言，关注谁赢谁输：通胀期间储户购买力下降，而借款人可能用价值降低的钱偿还贷款。固定收入者受损。
10. Unemployment | 失业
Unemployment refers to people who are actively seeking work but cannot find a job. The unemployment rate measures the percentage of the labour force that is unemployed. It is a key indicator of economic health.
失业指积极寻找工作但找不到工作的人。失业率衡量劳动力中失业人口的百分比。它是经济健康的一个关键指标。
Three main types tested at Year 9: cyclical unemployment (caused by a lack of demand in the whole economy — think recession), structural unemployment (jobs disappear because skills no longer match what employers need), and frictional unemployment (short‑term unemployment when people move between jobs).
9 年级考查的三种主要类型：周期性失业（由整个经济需求不足引起——想想经济衰退），结构性失业（因技能不再符合雇主需要导致岗位消失），以及摩擦性失业（人们换工作期间的短期失业）。
Memory: 'Cyclical is like a bicycle wheel — when the economic wheel slows down, people lose jobs.' 'Structural is about a broken bridge between skills and vacancies.' 'Frictional is the friction while you're switching.'
记忆：“周期性像自行车轮子——当经济车轮减速时，人们失业。”“结构性是技能与空缺之间的桥梁断裂。”“摩擦性是你调换期间的摩擦。”
Costs of unemployment include lost output (economy produces less), lower incomes, extra government spending on benefits, and social problems such as crime and
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