cir·cu·la·tion /ˌsɝkjəˈleʃən/
 流通,循環,發行量


 cir·cu·la·tion /ˌsɝkjəˈleʃən/ 名詞
 循環,肌覺


 circulation
 循環


 circulation
 循環


 Cir·cu·la·tion n.
 1. The act of moving in a circle, or in a course which brings the moving body to the place where its motion began.
    This continual circulation of human things.   --Swift.
 2. The act of passing from place to place or person to person; free diffusion; transmission.
    The true doctrines of astronomy appear to have had some popular circulation.   --Whewell.
 3. Currency; circulating coin; notes, bills, etc., current for coin.
 4. The extent to which anything circulates or is circulated; the measure of diffusion; as, the circulation of a newspaper.
 5. Physiol. The movement of the blood in the blood-vascular system, by which it is brought into close relations with almost every living elementary constituent. Also, the movement of the sap in the vessels and tissues of plants.

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 circulation
      n 1: the dissemination of copies of periodicals (as newspapers or
           magazines)
      2: movement through a circuit; especially the movement of blood
         through the heart and blood vessels
      3: (library science) the count of books that are loaned by a
         library over a specified period
      4: number of copies of a newspaper or magazine that are sold;
         "by increasing its circulation the newspaper hoped to
         increase its advertising"
      5: free movement or passage through a series of vessels (as of
         water through pipes or sap through a plant)
      6: the spread or transmission of something (as news or money)
         to a wider group or area