要评估某一市场的潜力，人们往往要分析其收人水平,因为它为那里居民的购买力高低提供了线索。

要评估某一市场的潜力，人们往往要分析其收人水平,因为它为那里居民的购买力高低提供了线索。

In assessing the potential of a market, people often look at its income level since it provides clues about the purchasing power of its residents.