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1.人们如何做出决策 how people make decisions
人们面临得失交换（权衡取舍）people face tradeoffs
某物的成本是为此所放弃的东西 the cost of something is what you give up to get it
理性人思考边际量 rational people think at the margin
人们会对激励做出反应 people response to incentives
2.人们如何相互作用 how people interact
贸易使人收益 trade can make everyone better off
市场通常是组织经济活动的好方式 Markets are usually a good way to orginze economic activitives.
政府有时可以改进市场结果 Governments can sometimes improve market outcames.
3.整体经济如何运行 how the economy as a whole
一国的生活水平取决于它的生产 the standard of living depends on a country's production
当政府发行了过多的货币时，物价上涨 prices rise when the government print too much money
社会面临通货膨胀和失业之间的短期得失交换 Society faces a short-run tradeoff between inflation and unemployment.
