The capital asset pricing model was not intended to be a positive theory of equilibrium in capital markets, but rather a normative theory of how prices should behave if investors acted in a certain way.
资本资产定价模型并非旨在成为资本市场的实证均衡理论，而是一种规范性理论，描述如果投资者以某种方式行事，价格应如何表现。
食品的未来取决于传统与创新的平衡。
我一直是这个世界上的陌生人，一个访客，一个游客。
Artificial intelligence is an important driving force for a new round of scientific and technological revolution and industrial transformation.
Collaboration across industries is key to solving global challenges.
La literatura no es más que un sueño dirigido.
每本书都是作者和读者之间的对话。