| 单词 | roughen | 
| 释义 | roughenverb  rough·en  ˈrə-fən     roughened; roughening ˈrə-fə-niŋ   ˈrəf-niŋ    transitive verb   : to make rough or rougher  her hands were roughened by work   intransitive verb   : to become rough   roughen verbas in to coarsen   Synonyms & Similar Words Relevance     
 Antonyms & Near Antonyms 
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