Microbial fuel cells are already being experimented with on Earth. For example, one prototype is being used at Pennsylvania State University to generate electricity as it purifies domestic wastewater.

• 在地球上已经试验过微生物燃料电池。例如,宾夕法尼亚大学正在使用的一个样品机,用它纯净家用废水时可以产生电流。