shift in demand meaning in Chinese

需要量变化

What of the charge that dell ' s size means it is less responsive to shifts in demand
那么对于戴尔的规模不足以迅速反映需求变化的问题，谁该负责呢？
But even many of the most bearish bears say oil might not start to retreat until it first rises high enough to force a significant shift in demand - - for instance , by changing people ' s driving habits
不过，即便是最悲观的看跌派也认为，油价回落之前还有一个过程，那就是要等到第一波上涨后油价高到足以促使需求方面发生转变，比如，改变人们的驾驶习惯。