degradand

例句：

1. 1. The degradation of the plastic bag is a significant environmental issue.
   塑料袋的降解是一个严重的环境问题。
2. 2. The study found that certain bacteria can degrade the plastic waste into useful materials.
   研究发现某些细菌可以将塑料废物降解成有用的材料。
3. 3. The degradation process of organic matter in soil is crucial for nutrient cycling.
   土壤中有机物质的降解过程对于养分循环至关重要。