polishing
  拋光
  Pol·ish v. t. [imp. & p. p. Polished p. pr. & vb. n. Polishing.]
  1. To make smooth and glossy, usually by friction; to burnish; to overspread with luster; as, to polish glass, marble, metals, etc.
  2. Hence, to refine; to wear off the rudeness, coarseness, or rusticity of; to make elegant and polite; as, to polish life or manners.
  To polish off, to finish completely, as an adversary. [Slang]
  Pol·ish·ing, a. & n. from Polish.
  Polishing iron, an iron burnisher; esp., a small smoothing iron used in laundries.
  Polishing slate. (a) A gray or yellow slate, found in Bohemia and Auvergne, and used for polishing glass, marble, and metals. (b) A kind of hone or whetstone; hone slate.
  Polishing snake, a tool used in cleaning lithographic stones.
  Polishing wheel, a wheel or disk coated with, or composed of, abrading material, for polishing a surface.
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  polishing
       n : the work of making something shine by polishing it; "the
           shining of shoes provided a meager living" [syn: shining]