Natural experiments can provide valuable insights into economic questions.
自然实验可以为经济问题提供有价值的见解。
"True leadership is about creating an environment where people can flourish and achieve their full potential."
"A writer is someone for whom writing is more difficult than it is for other people."
I'm very shy, believe it or not. It's true.
抽象的目的不是模糊，而是创建一个新的语义层次，在这个层次上可以绝对精确。
Never ask a woman if she is pregnant. Let her tell you if she is.