Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.
The first lesson reading teaches is how to be alone.
每一颗水果都在讲述一个故事 - 关于阳光、雨水和人类双手的呵护。
In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.