O
Oligopoly 寡头
A market structure in which only a few sellers offer similar or identical products
Open economy 开放经济
An economy that interacts freely with other economies around the world
Open-market operations 公开市场活动
The purchase and sale of United States government bonds by the Fed
Opportunity cost 机会成本
Whatever must be given up to obtain some item
Okun’s law 奥肯定律
the observation that as the economy pulls out of a recession, output increases more than proportionately to increases in employment
opportunity sets 机会集合
a summary of the choices available to individuals, as defined by budget constraints and time constraints
output per capita 人均产量
a nation’s output divided by the number of individuals in the country
outputs 产量
the outcomes of a production process
overhead costs 管理费用
the costs a firm must pay just to remain in operation. They do not depend on the scale of production