lu·cid /ˈlusəd/
  (a.)清澈的,透明的,透徹的
  lu·cid /ˈlusəd/ 形容詞
  Lu·cid a.
  1. Shining; bright; resplendent; as, the lucid orbs of heaven.
     Lucid, like a glowworm.   --Sir I. Newton.
     A court compact of lucid marbles.   --Tennyson.
  2. Clear; transparent. “ Lucid streams.”
  3. Presenting a clear view; easily understood; clear.
     A lucid and interesting abstract of the debate.   --Macaulay.
  4. Bright with the radiance of intellect; not darkened or confused by delirium or madness; marked by the regular operations of reason; as, a lucid interval.
  Syn: -- Luminous; bright; clear; transparent; sane; reasonable. See Luminous.
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  lucid
       adj 1: (of language) transparently clear; easily understandable;
              "writes in a limpid style"; "lucid directions"; "a
              luculent oration"- Robert Burton; "pellucid prose"; "a
              crystal clear explanation"; "a perspicuous argument"
              [syn: limpid, luculent, pellucid, crystal clear,
               perspicuous]
       2: having a clear mind; "a lucid moment in his madness"
       3: capable of thinking and expressing yourself in a clear and
          consistent manner; "a lucid thinker"; "she was more
          coherent than she had been just after the accident" [syn:
          coherent, logical]
       4: transmitting light; able to be seen through with clarity;
          "the cold crystalline water of melted snow"; "crystal
          clear skies"; "could see the sand on the bottom of the
          limpid pool"; "lucid air"; "a pellucid brook";
          "transparent cristal" [syn: crystalline, crystal clear,
           limpid, pellucid, transparent]