a state of agitation or turbulent change or development; "the political ferment produced new leadership"; "social unrest"動揺、不穏な変化または開発の状態興奮
a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol微生物が有機物質をより単純な物質に分解する作用醗酵