de·cade /ˈdɛˌked, dɛˈked; ||ˈdɛkəd/
  十年,10年
  decade
  十進; 十數群; 十
  decade
  十進
  Dec·ade n.  A group or division of ten; esp., a period of ten years; a decennium; as, a decade of years or days; a decade of soldiers; the second decade of Livy. [Written also decad.]
     During this notable decade of years.   --Gladstone.
  ◄ ►
  decade
       n 1: a period of 10 years [syn: decennary, decennium]
       2: the cardinal number that is the sum of nine and one; the
          base of the decimal system [syn: ten, 10, X, tenner]