名詞 recycling:

1. the act of processing used or abandoned materials for use in creating new products

動詞 recycle:

1. cause to repeat a cycle
   同義詞：recycle
2. use again after processing
   同義詞：recycle, reprocess, reuse

1. Recycled materials are mostly of limited use.
   再生材料大多用途有限。
2. Recycling is the only proper way.
   循環(huán)再生是惟一的好辦法。