仕組み

keizaigaku wa keizai no shikumi o kenkyū suru gakumon de aruEconomics is the study of economic mechanisms

watashi wa kono shikumi o shirimasen ga tantōsha ga setsumei suru deshōI don't know this system, but the man in charge will explain

shōenerugī, shōshigen-kata no seikatsu o okuru shikumi ga hitsuyō to naruIn this case, the conservation of energy and resources is needed