📚 Year 9 OCR Economics: Key Terms Quick Memorisation Guide | OCR 经济学术语速记指南
Economics has a language of its own, full of specific terms that describe how individuals, businesses, and governments make choices about scarce resources. Learning to memorise and accurately use these terms is the foundation for success in your OCR Economics course. This guide covers the essential key terms for Year 9, explaining each concept clearly with real-world examples, and presents both the English and Chinese definitions side by side to help you master them quickly.
经济学有其独特的语言，充满了描述个人、企业和政府如何对稀缺资源做出选择的特定术语。学会记忆并准确使用这些术语是您在OCR经济学课程中取得成功的基础。本指南涵盖了九年级必备的关键术语，用现实世界中的例子清晰地解释每个概念，并以英中对照的形式呈现，帮助您快速掌握它们。
1. The Basic Economic Problem | 基本经济问题
Every society faces the basic economic problem: human wants are unlimited, but the resources needed to produce goods and services are limited. This scarcity means that choices must be made. The three fundamental economic questions that arise are: What to produce? How to produce? For whom to produce? Answering these questions involves allocating scarce resources to satisfy the most pressing needs and wants.
每个社会都面临基本经济问题：人类的欲望是无限的，但生产商品和服务所需的资源是有限的。这种稀缺性意味着必须做出选择。由此产生的三个基本经济问题是：生产什么？如何生产？为谁生产？回答这些问题涉及分配稀缺资源以满足最迫切的需要和欲望。
Because resources are insufficient to produce everything people desire, every decision has a cost. This is the concept of opportunity cost – the value of the next best alternative forgone. Even on a national level, governments must choose between spending on healthcare, education, or defence, each choice carrying a trade-off.
由于资源不足以生产人们想要的一切，每个决策都有成本。这就是机会成本的概念——所放弃的次优选择的价值。即使在国家层面，政府也必须在医疗、教育或国防支出之间做出选择，每一个选择都伴随权衡。
2. Scarcity and Choice | 稀缺性与选择
Scarcity is the fundamental economic condition where limited resources cannot meet all unlimited wants. It is permanent and universal. In contrast to a shortage (which is temporary), scarcity forces individuals and societies to prioritize. For example, a student has a limited amount of time to study, socialise, and sleep – time is a scarce resource, so choices about how to spend it are inevitable.
稀缺性是经济学的基本状况，即有限的资源无法满足无限的欲望。它是永久且普遍存在的。与短缺（暂时性）不同，稀缺性迫使个人和社会进行优先排序。例如，一名学生用于学习、社交和睡眠的时间有限——时间是一种稀缺资源，因此如何支配时间的选择不可避免。
Choices arise from scarcity. When you decide to buy a video game, you may have to give up going to the cinema. The decision-making process in economics assumes that people act rationally to maximise their satisfaction, known as utility. Businesses also make choices to utilise limited capital and labour efficiently to maximise profit.
选择源于稀缺性。当你决定购买一款电子游戏时，你可能不得不放弃去看电影。经济学中的决策过程假设人们会理性地行动以最大化满足感，即效用。企业也会做出选择，以有效利用有限的资本和劳动力来实现利润最大化。
3. Opportunity Cost | 机会成本
Opportunity cost is not just the money spent on an item, but the value of the next best alternative that you sacrifice. For example, if a government spends £10 million on a new hospital, the opportunity cost might be the new schools or roads that could have been built with that money. For individuals, if you choose to work overtime for extra pay, the opportunity cost is the leisure time you lose.
机会成本不仅仅是花在某物上的金钱，而是你所牺牲的次优选择的价值。例如，如果政府花费1000万英镑建造一所新医院，机会成本可能是本可用这笔钱建造的新学校或道路。对于个人，如果你选择加班赚取额外工资，机会成本就是你失去的休闲时间。
To calculate opportunity cost, you compare the benefits of the chosen option with the benefits of the forgone option. It is a crucial concept because it highlights that every decision involves a trade-off. Recognising opportunity costs helps consumers, firms, and governments make more informed decisions.
计算机会成本，需要将所选方案的收益与放弃方案的收益进行比较。这是一个关键概念，因为它突显了每个决策都涉及权衡。认识到机会成本有助于消费者、企业和政府做出更明智的决策。
4. Factors of Production | 生产要素
Resources used to produce goods and services are called factors of production, traditionally grouped into four categories: Land, Labour, Capital, and Enterprise. Land includes all natural resources such as oil, water, forests, and land itself. Labour is the human effort, both physical and mental, used in production. Capital refers to man-made goods used to produce other goods and services, like machinery, tools, and factories. Enterprise is the ability to bring the other three factors together to produce goods and services, usually undertaken by entrepreneurs who take risks in hope of profit.
用于生产商品和服务的资源被称为生产要素，传统上分为四类：土地、劳动、资本和企业。土地
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