reduction rate

例句：

1. 1. The company'sprofit has decreased by 20%since last year.
   公司的利润自去年以来下降了20%。
2. 2. The efficiency of thenew machine is much higher than that ofthe old one.
   新机器的效率远高于旧机器。
3. 3. The reduction rate of carbon dioxideemissions has been steadily increasing.
   二氧化碳排放的减少率一直在稳步上升。