学校决定减少家庭作业量以减轻学生压力。

The school decided to implement a ___reduction in homework to ease students' stress.

老师给我们展示了一个小比例的太阳系模型。

The teacher showed us a ___reduction of the solar system model.

超市对过期商品进行了50%的降价处理。

The supermarket offered a 50% ___reduction on expired products.

在这个反应中，铜离子经历了一个还原过程。

In this reaction, copper ions undergo a ___reduction process.

这首小提琴曲是原歌剧的简化版本。

This violin piece is a ___reduction of the original opera.