| 单词 | rag pump |
| 释义 | Definition of rag pump in English:rag pumpnoun ˈraɡ pʌmp Mining historical
OriginMid 18th century. From rag + pump. Definition of rag pump in US English:rag pumpnounˈraɡ pʌmp Mining historical
OriginMid 18th century. From rag + pump. |
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