Innovation without execution is just imagination.
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.
【译文】贫穷而没有怨恨很难，富裕而不骄狂是容易的。
The best stories are those that leave us with more questions than answers.
解释：咸味食物走血分，血病的人不宜多食，说明饮食需根据病症调整。