• 1. non-biodegradable material: 不可生物降解材料
• 2. non-biodegradable e material: 不可生物降解材料

• 1.As we all known plastic bags are non-biodegradable material and it will stay in the soil for a long time.
  众所周知，塑料袋是不可生物降解的材料，会长期留在土壤里面。
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• 2.As we all known, plastic bags are non-biodegradable material and it will stay in the soil for a long time.
  众所周知，塑料袋是不可生物降解的材料，会长期留在土壤里面。
  dict.yoduao.com
• 3.The sludge degradation rate and the non-biodegradable material concentration in the liquid phase would increase when the reaction temperature is raised.
  提高温度时，污泥降解速率亦提高，但转入液相的难生物降解产物也增加。
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