全世界都需要听到这个人的声音。他帮助我发现了我自己的另一面,一直以来都在我面前,但我没有承认。
工具变量的美妙之处在于它们让我们以新的视角看世界。
The coal industry must deepen supply-side structural reforms and improve supply quality.
Trust is built when actions align with words.
The concept of truth is inseparable from the concept of freedom.