U
Unemployment insurance 失业保险
A government program that partially protects workers’ incomes when they become unemployed
Unemployment rate 失业率
The percentage of the labor force that is not employed
Union 工会
A worker association that bargains with employers over wages and working conditions
Unit of account 计价单位
The yardstick with which people post prices and record debts
Utilitarianism 功利主义
The political philosophy according to which the government should choose policies to maximize the total utility of everyone in society
Utility 效用
A measure of happiness or satisfaction
union shops 工会化企业
unionized firms in which all workers are required to join the union as a condition of employment
utility possibilities curve效用可能性曲线
a curve showing the maximum level of utility that one individual can attain, given the level of utility attained by others