我们无法仅依靠理性来认识因果关系。
Every effort is for a better future.
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.
The challenge is to express the most with the least.
可持续发展不是一种选择，而是我们对后代的责任。
Curiosity is the engine of innovation.