无人机不是玩具,而是改变行业的工具。
定义就是限制。
子贡问怎样实现仁,孔子说:“工人要做好工,必先磨好工具。生活在那里,就要追随那里的品德高尚的领导,结交那里的仁义之士。”
每一个挑战都是成长的机会。
The only way to do great work is to love what you do.
One of the first things taught in introductory statistics textbooks is that correlation is not causation. It is also one of the first things forgotten.