随着人口的暴长,城市在飞速扩展,我们每日三餐的“进口货”出产地——农田,正在大片大片地消失。科学家们预言,长此下去,至21世纪中期,陆地上的空间已无法满足人类生存的需求。科学家们认为,人类只有回归到自己生命的摇篮——海洋里去,才是一条现实的出路。 目前世界上已有许多国家正积极从事海洋建筑工程的研究,希望城市向海洋发展。对这项研究最感兴趣的是地少人多的日本。80年代初,日本已在神户沿海建成一座迄今世界上最大的海上城市,可供2万多人居住。但这远远不能满足21世纪人类向海洋大迁居的需求。因 With the population boom, the city is rapidly expanding, and our “imported” produce, the farmland of three meals a day, is disappearing in large tracts. In the long run, scientists predict that by the middle of the 21st century, the space on land will no longer be able to meet the needs of human existence. Scientists believe that only by returning to the cradle of our own life, the human being, is the way out for reality. At present, many countries in the world are actively engaged in the research of marine construction projects and hope that the cities will develop into the oceans. Most interested in this research is Japan, where there are fewer people. In the early 1980s, Japan built a coastal city on the coast of Kobe that is now the largest in the world and can accommodate more than 20,000 people. But this can not meet the needs of large-scale human relocation to the oceans in the 21st century. because