coarse  
adjective uk/kɔːs/ us/kɔːrs/
  (ROUGH)      
  粗糙的;不光滑的;不柔软的;粗大的
rough and not smooth or soft, or not in very small pieces
  coarse sand/breadcrumbs 粗沙/面包屑 
 Linen is a coarse-grained fabric. 亚麻布是一种质地粗糙的布料。 
   (RUDE)      
 粗俗的;粗野的;无礼的
rude and offensive
  a coarse joke 粗俗的笑话 
 coarse language 粗话