rot·ten·stone 
(rŏtn-stōn′)
(rŏtn-stōn′)n.
A soft decomposed limestone, used in powder form as a polishing material.
| 单词 | rottenstone |
| 释义 | rot·ten·stone (rŏtn-stōn′)n. A soft decomposed limestone, used in powder form as a polishing material. |
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