为什么说one world one dream对中国面向世界很重要

When people are grouped into societies, they face different kinds of tradeoffs.The classic tradeoff is between “guns and butter.” The more we spend on nationaldefense to protect our shores from foreign aggressors (guns), the less we can spendon consumer goods to raise our standard of living at home (butter). Also importantin modern society is the tradeoff between a clean environment and a high level ofincome. Laws that require firms to reduce pollution raise the cost of producinggoods and services. Because of the higher costs, these firms end up earning smallerprofits, paying lower wages, charging higher prices, or some combination of thesethree. Thus, while pollution regulations give us the benefit of a cleaner environmentand the improved health that comes with it, they have the cost of reducingthe incomes of the firms’ owners, workers, and customers.

　　Another tradeoff society faces is between efficiency and equity. Efficiencymeans that society is getting the most it ca