clarification
  澄清,淨化
  clar·i·fi·ca·tion /ˌklærəfəˈkeʃən/ 名詞
  澄清
  Clar·i·fi·ca·tion n.
  1. The act or process of making clear or transparent, by freeing visible impurities; as, the clarification of wine.
  2. The act of freeing from obscurities.
     The clarification of men's ideas.   --Whewell.
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  clarification
       n 1: an interpretation that removes obstacles to understanding;
            "the professor's clarification helped her to understand
            the textbook" [syn: elucidation, illumination]
       2: the act of removing solid particles from a liquid [syn: clearing]