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。
如果你想要为挽救生命而从事汽车自动行驶事业的话,你需要知道这个技术绝不是能从哪个特定学科里学到的。1995年,我还是一个博士生的时候,我就已经对无人驾驶汽车感兴趣了。
The jaws of power are always open to devour, and her arm is always stretched out, if possible, to destroy the freedom of thinking, speaking, and writing.
你不需要气象员来知道风往哪个方向吹。
物理定律是普遍的,但我们对它们的理解在不断演变。
The artist is a receptacle for emotions that come from all over the place: from the sky, from the earth, from a scrap of paper, from a passing shape, from a spider's web.