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人想在海中生活,最重要的是要能克服两个不可避免的难题:一是如何抵御因水深带来的压力;二是怎样解决在水中呼吸的问题。如果我们只是停留在水深不超过10米的海面附近,那么水压是十分有限的,不会给我们带来什么麻烦。如果要潜入较深海底,通常需要有潜水器械的帮助。为了解决水中的呼吸问题,就要让水中人背上氧气筒,就像现在许多潜水员所做的那样。但这样做的缺点是很明显的,一则简中所装的氧气毕竟有限,不可能维持长时间的需要;二则带着这样一个笨重的装置,必然会给水中人带来诸多不便。有没有可能让人像鱼儿那样使用人工鳃
People want to live in the sea, the most important thing is to be able to overcome two unavoidable problems: First, how to withstand the pressure caused by the depth of water; the second is how to solve the problem of breathing in the water. If we just stayed near the sea at no more than 10 meters, the water pressure was very limited and did not give us any trouble. If you want to dive deeper into the sea, diving equipment usually need to help. In order to solve the breathing problems in the water, it is necessary to let the water back to the oxygen cylinder, as many divers now do. However, the shortcoming is that it is obvious that the oxygen contained in a simple one is of limited value and it is impossible to maintain its long-term needs. Second, with such a cumbersome device, it is bound to bring inconvenience to the water-borne persons. Is it possible to make artificial gills like fish?