First, in the context of a mature market such as for oil in developed countries, the direct rebound effect is usually small, and so increased fuel efficiency usually reduces resource use, other conditions remaining constant.
首先，在发达国家石油等成熟市场的背景下，直接反弹效应通常很小，燃油效率提高通常会降低资源利用，其他条件仍然保持不变。