大萧条是20世纪历史上的一个决定性时刻,理解其原因和后果仍然是经济学家的一项重要任务。
Collaboration is the key to solving complex challenges.
Tomorrow will be better for as long as America keeps alive the ideals of freedom and a better life.
在认识到热是粒子运动后,很容易得出结论:这种运动必然遵循力学的一般规律。
The most innovative solutions often come from constraints.
AI就像一百年前的电力一样,它将改变每一个行业。