像鸟儿那样自由自在的翱翔是人类由来已久的心愿，严格地说，飞机只是部分实现了人的心愿。可是，荷兰内伊海根大学的海姆博士却说：“我们能令所有的东西，包括薄饼、青蛙和人类，都能在空中自由飞翔。” 怎么回事？ 原来，海姆博士是利用的一种“反重力机器”来实 The soaring freedom of the birds is the long-cherished wish of human beings. Strictly speaking, the plane only partially fulfilled people’s wishes. However, Dr. Heim from the University of Nyhagen in the Netherlands said: “We can make everything, including pancakes, frogs and humans, fly freely in the air.” What’s going on? It turned out that Dr. Haim is using a kind of “anti-gravity machine.”