Wiktionary
biological fuel cells
n. (biological fuel cell English)
Usage examples of "biological fuel cells".
With modern power tools as cheap as they are, with small machines as well, with biological fuel cells to furnish low-cost energy, with the food-growing techniques developed for extraterrestrial bases -- a family could become self-sufficient.
With modern power tools as cheap as they are, with small machines as well, with biological fuel cells to furnish low-cost energy, with the food-growing techniques developed for extraterrestrial bases—.