| 单词 | linea nigra | 
| 释义 | Definition of linea nigra in English:linea nigranounˌlɪnɪə ˈniːɡrə 
 OriginLate 19th century: Latin, from linea ‘line’ and nigra, feminine of niger ‘black’. Definition of linea nigra in US English:linea nigranoun 
 OriginLate 19th century: Latin, from linea ‘line’ and nigra, feminine of niger ‘black’.  | 
	
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