| 单词 | laughing muscle | 
| 释义 | Definition of laughing muscle in English:laughing musclenoun 
 OriginMid 18th century; earliest use found in John Hoadly (1711–1776), poet and playwright. Definition of laughing muscle in US English:laughing musclenoun 
 OriginMid 18th century; earliest use found in John Hoadly (1711–1776), poet and playwright.  | 
	
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