relative reduction

例句：

1. 1. The population has been experiencing a relative reduction in the number of young people.
   人口中年轻人的数量正在相对减少。
2. 2.The company's profits have been declining due to the relative reduction in demand.
   由于需求的相对减少，公司的盈利一直在下降。
3. 3.The temperature has been dropping steadily, which is a relative reduction from the previous year.
   温度持续下降，与去年相比是一个相对减少。