re·cen·cy /ˈrisṇ(t)si/
  嶄新
  Re·cen·cy n.  The state or quality of being recent; newness; new state; late origin; lateness in time; freshness; as, the recency of a transaction, of a wound, etc.
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  recency
       n 1: a time immediately before the present [syn: recentness]
       2: the property of having happened or appeared not long ago
          [syn: recentness]