质量被定义为“产品、过程或服务满足规定或潜在要求（或需要）的特性和特征的总和”。
Quality is defined as the summation of specialties and characteristics of products, course and services that can meet the regulation and potential demands.
足球市场是人们对足球运动竞赛产品的现实和潜在的需求总和。
Football market is all the competitive goods which people need to buy for reality and potentiality.
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