📚 Year 9 Edexcel Economics: Vocabulary Quick-Memory Guide | Edexcel 九年级经济学词汇术语速记指南
Memorising economic terms doesn’t have to be a chore. With clear definitions and clever memory hooks, every word becomes a building block for deeper understanding. This guide pairs key Edexcel Year 9 vocabulary with simple English explanations and their Chinese equivalents, plus easy mnemonics to lock them into your long-term memory.
背诵经济学术语不必枯燥。用清晰的定义和巧妙的记忆挂钩，每个词汇都能成为理解更深层知识的基石。这份指南为 Edexcel 九年级核心词汇提供简单的英文解释、中文对应义项，以及轻松的口诀联想，帮助你把这些术语牢牢钉在长期记忆中。
1. Scarcity and Choice | 稀缺性与选择
Scarcity means that resources are limited while human wants are unlimited. The central economic problem forces individuals, businesses, and governments to make choices about what to produce, how to produce it, and for whom. The memory hook SWiH — Scarcity: Wants infinite, Have finite — reminds you that scarcity is the mother of all economic decisions.
稀缺性意味着资源有限而人的欲望无限。这个基本经济问题迫使个人、企业和政府做出选择——生产什么、如何生产、为谁生产。记忆口诀 SWiH（稀缺：欲望无限，拥有有限）提醒你，稀缺是一切经济决策的根源。
2. Opportunity Cost | 机会成本
Opportunity cost is the value of the next best alternative forgone when a choice is made. It is never the sum of all rejected options, only the one you most valued after your choice. Think NAB — Next Alternative Lost. Every time you spend an hour gaming instead of revising, the opportunity cost is the potential grade improvement you sacrificed.
机会成本是做出选择时所放弃的次优选项的价值。它绝不是所有被拒绝选项的总和，只是你做出选择后放弃的那个最有价值的东西。联想 NAB — “下一个最佳放弃”（Next Alternative Lost）。每次你把一小时花在打游戏而不是复习上，机会成本就是你牺牲的那个可能提高的成绩。
3. Goods and Services | 商品与服务
Goods are tangible products you can touch — like a textbook or a sandwich. Services are intangible activities performed for you — like a haircut or an online lesson. A quick recall tip: Goods = Grab, Services = Someone does. Free goods, such as sunlight, are abundant and cost nothing, while economic goods are scarce and command a price.
商品是你可以触摸的有形产品，例如课本或三明治。服务是为你执行的无形活动，例如理发或在线课程。快速记忆技巧：商品 = 可抓住（Grab），服务 = 别人为你做（Someone does）。自由物品如阳光，充裕且无需付费；经济物品稀缺，具有价格。
4. Factors of Production | 生产要素
The four factors of production are land, labour, capital, and enterprise — remembered by CLL-E (Capital, Land, Labour, Enterprise) or the phrase “CELL” if you swap roles. Land earns rent, labour earns wages, capital earns interest, and enterprise earns profit. Enterprise is the human drive to combine the other three factors to create goods and services, bearing the risks of business.
四种生产要素是土地、劳动力、资本和企业家才能，可用 CLL-E（资本、土地、劳动力、企业家才能）记忆，调换顺序后便是 CELL。土地赚取租金，劳动力赚取工资，资本赚取利息，企业家才能赚取利润。企业家才能是人类将其他三个要素结合起来创造商品和服务的驱动力，并承担经营风险。
5. Specialisation and Division of Labour | 专业化与劳动分工
Specialisation occurs when individuals, firms, or countries concentrate on producing a narrow range of products to become more efficient. Division of labour breaks the production process into small tasks, with each worker focusing on one step. Recall “Do One Thing Well” — specialisation raises output, but boredom and over-dependence can become drawbacks.
专业化指个人、企业或国家集中于生产少数种类的产品，从而提高效率。劳动分工把生产过程拆成小任务，每个工人专注完成一道工序。记忆法：“把一件事做好”（Do One Thing Well）。专业化提高产出，但枯燥乏味和过度依赖可能成为其弊端。
6. Demand and Supply | 需求与供给
Demand is the quantity of a product that consumers are willing and able to buy at different prices, usually sloping downward. Supply is the quantity producers are willing to offer, sloping upward. Mnemonic: D-swoop (Demand slopes Down), S-soar (Supply slopes Up). The equilibrium price sits where the two curves cross — no shortage, no surplus.
需求是消费者在不同价格下愿意并能够购买的数量，通常向下倾斜。供给是生产者愿意提供的数量，向上倾斜。记忆法：D 向下俯冲（Demand slopes Down），S 向上高飞（Supply slopes Up）。均衡价格位于两条曲线相交之处——既无短缺也无过剩。
7. Price Elasticity of Demand | 需求的价格弹性
Price elasticity of demand (PED) measures how responsive quantity demanded is to a change in price. If a price drop sharply increases sales, demand is elastic. If sales barely change, demand is inelastic. Trick: ELASTIC = Enthusiastic reaction to Lower price, A Sales Take-off In Count. Products with many substitutes or luxury status tend to have elastic demand.
需求的价格弹性（PED）衡量需求量对价格变化的反应程度。价格下跌后销量大幅增加，需求就是富有弹性的；销量几乎不变则是缺乏弹性的。巧记：ELASTIC = 降价引发热情反应、销量飙升（Enthusiastic reaction to Lower price, A Sales Take-off In Count）。替代品众多或属于奢侈品的商品，需求通常富有弹性。
8. Production Costs and Revenue | 生产成本与收益
= fixed cost + variable cost. Revenue is the income from sales: price × quantity. Remember FC-Stone, VC-stretch — ne, unmoving; variable costs stretch with production. Profit = total revenue − total cost.
固定成本不随产量变化（如租金），可变成本随产量变化（如原材料）。总成本 = 固定成本 + 可变成本。收益是销售收入：价格 × 数量。记忆法：FC 如石不动（FC-Stone），VC 随量伸展（VC-stretch）。利润 = 总收益 − 总成本。
9. Economies and Diseconomies of Scale | 规模经济与规模不经济
Economies of scale are cost advantages a firm gains as it increases its scale of production, lowering average cost per unit. Internal sources include technical, purchasing, financial, and managerial efficiencies. Diseconomies of scale occur when the firm becomes too large, leading to communication breakdowns and rising average costs. Picture “Bigger is Cheaper… until it’s not”.
规模经济是指企业扩大生产规模时获得的成本优势，降低单位平均成本。内部来源包括技术、采购、财务和管理效率。规模不经济则发生在企业过度庞大时，导致沟通失灵和平均成本上升。记住：“越大越便宜……直到不再便宜”（Bigger is Cheaper… until it’s not）。
10. Market Structures | 市场结构
Market structures range from perfect competition — many small firms, identical products, no barriers — to monopoly, where a single seller dominates. Oligopoly has a few large firms, often with differentiated goods and strategic interdependence. Use the acronym P-MO (Perfect, Monopolistic, Oligopoly, Monopoly) to memorise the typical spectrum from most to least competitive.
市场结构从完全竞争——大量小企业、同质产品、无进入壁垒——到垄断，即单一卖家主导。寡头垄断有少数大企业，产品常有差异且战略上相互依赖。用缩写 P-MO（完全竞争、垄断竞争、寡头、垄断）来记住通常从竞争最激烈到最不激烈的谱系。
11. Macroeconomic Goals and Indicators | 宏观经济目标与指标
Governments typically pursue four main macroeconomic goals: sustained economic growth, low and stable inflation, low unemployment, and a balanced trade position. Key indicators include Gross Domestic Product (GDP), the Consumer Price Index (CPI), and the unemployment rate. Think of GICU — Growth, Inflation, CPI, Unemployment — as a dashboard for the economy’s health.
政府通常追求四大宏观经济目标：持续的经济增长、低而稳定的通胀、低失业率和平衡的贸易状况。关键指标包括国内生产总值（GDP）、消费者价格指数（CPI）和失业率。把 GICU（增长 Growth、通胀 Inflation、物价指数 CPI、失业 Unemployment）当作衡量经济健康的仪表盘。
12. Fiscal and Monetary Policy | 财政政策与货币政策
Fiscal policy involves government decisions on taxation and public spending to influence the economy. Expansionary fiscal policy raises spending or cuts taxes to boost demand; contractionary does the reverse. Monetary policy, managed by the central bank, uses interest rates and the money supply to control inflation and support growth. Link Fiscal = Financial decisions by the Finance ministry, Monetary = Money managed by the central bank.
财政政策涉及政府关于税收和公共支出的决策，以影响经济。扩张性财政政策增加支出或减税以刺激需求；紧缩性财政政策则相反。货币政策由中央银行管理，通过利率和货币供应量控制通胀并支持增长。联想记忆：Fiscal → 财政部门的财务决定，Monetary → 中央银行管理货币。
Published by TutorHao | Economics Revision Series | aleveler.com
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