recycling
n.
1924, verbal noun from recycle, v.. Originally a technical term in oil-refining and similar industries; its broader consumer sense dates from 1960.
| 词汇 | recycling | 
| 词根词缀 | Online Etymology Dictionary recycling n. 1924, verbal noun from recycle, v.. Originally a technical term in oil-refining and similar industries; its broader consumer sense dates from 1960. | 
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