意大利艺术家和科学家达·芬奇被誉为历史上最全面的天才。1796年,在他死后200多年,有人精心整理了他留下的2000多页笔记,大为惊异地发现记载着几乎应有尽有、无所不包的重大技术发明:梯式船闸、潜水艇、飞机……然而,我们却没有看到达·芬奇的任何重大发明的实物,现如今人们能记住他的似乎只是“蒙娜丽莎的 Italian artist and scientist Da Vinci is known as the most comprehensive genius in history. In 1796, after more than 200 years of his death, some people carefully sorted out more than 2,000 pages of notes he had left behind. He was surprised to find that there were major technical inventions that contained almost everything: ladder locks, submarines, and airplanes. ...... However, we did not see the actual invention of any of Da Vinci’s great inventions. Nowadays people can remember that he seems to be just a ”Mona Lisa’s