1.  degraded
2.  degenerated
3.  vestigial
4.  pejorative
5.  retrogressive

• 1. 退化的: degenerative | degenerate
• 2. 非退化的: Non-degenerate | nonsingular
• 3. 种族退化的: cacogenic | dysgenic

更多释义

• 1.世界自然基金会的一项研究显示，由于污染、气候变化和过度开发，中国的湿地正遭受退化的严重威胁。
  A WWF research showed China's wetlands were seriously threatened by degradation because of pollution, climate change and overexploitation.
  dict.yoduao.com
• 2.先锋植物种子的增加和被猎杀动物的系统性变化是环境退化的证据。
  Increases in seeds from pioneer plants and systematic changes in the animals hunted are evidence of environmental degradation.
  dict.yoduao.com
• 3.先锋植物种子的增加，被猎杀的动物以及用于建筑和燃料的树木系统的变化是环境退化的证据。
  Increases in seeds from pioneer plants and systematic changes in the animals hunted and the trees used for construction and fuel are evidence of environmental degradation.
  dict.yoduao.com

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