elasticity

Price elasticity of demand measures how responsive consumer demand is to a change in price.需求价格弹性衡量消费者需求对价格变化的敏感程度。

Luxury goods tend to exhibit high income elasticity, meaning demand rises sharply when incomes grow.奢侈品往往表现出很高的收入弹性，这意味着当收入增长时，需求会急剧上升。