caviller
  吹毛求疵者;苛責者
  Cav·il·er or Cav·il·ler n. One who cavils.
     Cavilers at the style of the Scriptures.   --Boyle.
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  caviller
       n : a disputant who quibbles; someone who raises annoying petty
           objections [syn: quibbler, caviler, pettifogger]