在美国曾发生过这样一件怪事：高速公路两旁的树木都莫名其妙地死去了。开始人们都以为是汽车排出的废气毒死的，后来经过反复调查研究，方真相大白。罪魁原来是过往汽车造成的振动．振动破坏了树根和土壤的接触。那么人类呢？人类生活的世界简直就是一个振动的王国。城市的地 In the United States there has been such a strange thing: the trees on both sides of the highway are inexplicably dead. People began to think that the car exhaust emissions poisoning, and later after repeated investigations and studies, the parties truth. The culprit turned out to be the vibrations caused by the passing cars. Vibration destroys the contact between the roots and the soil. So what about humans? The world of human life is simply a vibrating kingdom. The city’s land