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当一个国家的经济发展到一定程度时,随意的消费就会普遍起来,个人或家庭就可能在适当的还是昂贵的商品和服务之间进行选择,收入水平使他们有做这些选择的能力。
When a country’s economy develops to a certain degree, casual consumption will prevail, and individuals or families may choose between appropriate and expensive goods and services at a level of income that gives them the ability to make those choices.