biodegrades是biodegrade的第三人称单数
biodegrade
美 [.baɪoʊdɪ'ɡreɪd] 
英 [.baɪəʊdɪ'ɡreɪd] 
- v.生物降解
 - 网络生物递降分解;生物动因退化;生物分解
 
第三人称单数:biodegrades  现在分词:biodegrading  过去分词:biodegraded  
v.  | 1. to decay naturally as the result of the action of bacteria 2. if a substance biodegrades, bacteria cause it to separate into very small parts so that it is not harmful to the environment  |