There are often a large number indefinite factor that stimulate some variation in market, lead to market environment that aggravate risk and disorder, result in the change on consumption demand.

• 市场中往往有着大量的不确定性因素，这些因素共同激发了不小的变化，产生不断加剧风险和混乱的市场环境，导致消费需求的变异。