微生物是自然界中的一些形态微小,结构简单的生物。我国劳动人民发现并利用它的历史很早,三千年前,就已懂得用微生物来酿酒,又用以制酱、醋、腐乳、酸菜等。同时,它给生产和生活带来的祸害,也早为大家所熟知。譬如人得传染病,食物腐败 Microorganisms are a few small, simple organisms in nature. The working people in our country discovered and used it very early. Three thousand years ago, it was understood that microbes used wine to make sauces, vinegar, preserved bean curd, sauerkraut and so on. At the same time, its harmful effects on production and life have long been known to all. For example, people have infectious diseases, food corruption