| 单词 | puffing hole | 
| 释义 | Definition of puffing hole in English:puffing holenoun 
 OriginMid 19th century; earliest use found in United States Review. Definition of puffing hole in US English:puffing holenoun 
 OriginMid 19th century; earliest use found in United States Review.  | 
	
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