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最近,日本海洋开发建设协会提出七项开发海洋的宏大设想: 一、海面人工岛。用填海方法建一个面积700公顷的岛,岛上将修一个跑道长1500米的机场,另设休养地、产业、渔业和文化福利等设施。二、海上城。在离岸约40公里、水深约300米的洋上,建一座长5000米、宽1900米,
Recently, Japan Society for Ocean Development and Construction proposed seven grand plans for the development of the sea: First, the artificial island on the sea. A 700-hectare island will be built by reclamation. An island of 1,500 meters of runway length will be built on the island. Rest areas, industries, fisheries and cultural welfare facilities will be set up. Second, the sea city. About 40 kilometers offshore, about 300 meters deep on the ocean, build a 5000 meters long and 1900 meters wide,