人类社会发展到二十世纪中叶,一个新的产业门类被经济学家从国民经济中划分出来了。它既区别于包括农林牧渔业和采矿业的第一产业,也区别于包括工业和建筑业的第二产业,这就是人们所说的第三产业。它包括公用事业、商业、金融、旅游业、文教卫生和信息业、咨询业等等为生产和消费服务的众多的部门。 The development of human society to the mid-twentieth century, a new category of industry by economists from the national economy divided. It is different from primary industries including agriculture, forestry, animal husbandry, fishery and mining industries as well as secondary industries including industry and construction. This is what people call the tertiary industry. It includes numerous departments for the production and consumption of utilities, commerce, finance, tourism, culture, education, health and information, consulting, and more.