可持续的基础设施应该平衡经济、社会和环境的效益。

I think the best actors are the ones who are willing to take risks and not be afraid to fail.

物体与物体之间产生的"间"，才是最重要的表现。

The best films are the ones that stay with you long after you've seen them.

The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.