| be end easy bird problem develop get noise high offer |
Nature is wonderful. It our best teacher. It teaches us a lot and we are born to learn from it to solve . For example, scientists used what they saw in nature to improve our way of travelling. In days of high-speed train research and , scientists were once faced with a noise problem. The trains pushed air through tunnels at speeds. So, when a train came out of a tunnel, it could be very, very However, kingfisher birds hardly make a sound when they get into lakes or rivers. Engineers a clever idea. They changed the front of the trains to match the shape of the kingfisher. Then the air could pass over the trains. The problem was solved!
The kingfisher example is just one that we learned from nature. Scientists study the smart models that nature can . Then they use their wisdom（智慧）and imagination to design new products. Nature provides us with possibilities to find wonderful ways to improve our lives. Learning from nature knows no bounds（永无止境）!
