bi·cen·te·na·ry /ˌbaɪ(ˌ)sɛnˈtɛnəri, (ˌ)baɪˈsɛntṇˌɛri, ˌbaɪ(ˌ)sɛnˈtinəri/
  (a.)二百年的,每二百年的
  Bi·cen·te·na·ry a.  Of or pertaining to two hundred, esp. to two hundred years; as, a bicentenary celebration. -- n.  The two hundredth anniversary, or its celebration.
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  bicentenary
       adj : of or relating to or completing a period of 200 years;
             "bicentennial celebration" [syn: bicentennial]
       n : the 200th anniversary (or the celebration of it) [syn: bicentennial]
       [also: bicennaries (pl)]