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正在审议的系统是新一代的载人潜水器，可在海中 "飞 "行，而当代和老一代的潜水器则是沉到所需位置，然后在海底上缓慢移动。
the systems under consideration are a new generation of human occupied vehicle (hov) which "flies " through the water as opposed to the current and past generation of undersea vehicles that would sink to the desired location and move slowly through the terrain.