sec·ond·hand /ˈsɛkən(d)ˈhænd/
  (a.)間接獲得的,古舊的,二手的,做舊貨買賣的(ad.)間接地,間接聽來,以舊貨
  Sec·ond·hand a.
  1. Not original or primary; received from another; as, secondhand information.
     They have but a secondhand or implicit knowledge.   --Locke.
  2. Not new; already or previously possessed or used by another; as, a secondhand book, garment.
  At second hand. See Hand, n., 10.
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  secondhand
       adj 1: derived from what is primary or original; not firsthand; "a
              secondhand report"; "a secondhand account of a memory
              of something once read"; "most of our knowledge is
              secondhand"
       2: previously used or owned by another; "bought a secondhand
          (or used) car" [syn: used]
       adv : by indirect means; "I heard about it only secondhand or
             thirdhand"; "he prefers to buy secondhand"