| 单词 | precious opal | 
| 释义 | Definition of precious opal in English:precious opalnoun 
 OriginEarly 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. Definition of precious opal in US English:precious opalnoun 
 OriginEarly 19th century; earliest use found in Philosophical Transactions of the Royal Society of London.  | 
	
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