在巴西的圣卡塔林纳岛上,由美国专家与数千名建设者正在日以继夜地兴建“生物圈——I”体系,为将来在月球或火星上建立永久性的人类居住站进行一系列的试验。此项工程也叫做“模拟太空城”。它是一种以钢和玻璃建造的巨大的密封结构,其中有住宅、实验室、娱乐设施、森林、草原、沙漠等。它将于一九九九年竣工,届时将有八名训练有素 On the island of Santa Caterina, Brazil, US experts and thousands of builders are building the “Biosphere - I” system around the clock to conduct a series of tests for the future establishment of a permanent human settlement on the Moon or Mars. . This project is also called “simulating the space city”. It is a huge sealed structure made of steel and glass, including houses, laboratories, recreational facilities, forests, grasslands, and deserts. It will be completed in 1999 and there will be eight trained