environmental degradations 环境恶化
moral degradations 道德堕落
social degradations 社会地位下降
gradual degradations 逐渐退化
A: How has the local ecosystem changed in recent years?
A：近年来当地的生态系统发生了怎样的变化？
B: The degradations in water quality have become quite alarming.
B：水质的恶化已变得相当令人担忧。
1) 质量或水准的下降
2) 地位或等级的降低
3) 道德品质的沦丧
4) 自然环境的退化
1. 退化；堕落；降级
noun
1. The act or process of being lowered in quality, status, or moral character.
Synonym: decline, deterioration