Perhaps, Brandes thought, the environment at hydrothermal vents mimics an industrial process in which ammonia is synthesized by passing nitrogen and hydrogen over a hot metallic surface.

• 工业上可以在高热金属表面通过氮气与氢气以合成氨，于是布兰德斯便推想，也许海底热泉附近环境与工业制程有类似的地方。