关于幸福,你只有在失去它的时候才知道你曾经拥有过。
The value of drones lies in solving industry pain points.
The mind is a system of organs of computation, designed by natural selection to solve the kinds of problems our ancestors faced in their foraging way of life.
形容自然景观的壮丽与难以用笔墨完全描绘。