syn·chro·nize /ˈsɪŋkrəˌnaɪz, ˈsɪn-/
  (vt.)使同步,使合拍(vi.)同時發生
  Syn·chro·nize v. i. [imp. & p. p. Synchronized p. pr. & vb. n. Synchronizing ]  To agree in time; to be simultaneous.
     The path of this great empire, through its arch of progress, synchronized with that of Christianity.   --De Quincey.
  Syn·chro·nize, v. t.
  1. To assign to the same date or period of time; as, to synchronize two events of Greek and Roman history. “Josephus synchronizes Nisan with the Egyptian Pharmus.”
  2. To cause to agree in time; as, to synchronize the movements of different machines; to synchronize clocks.
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  synchronize
       v 1: make synchronous and adjust in time or manner; "Let's
            synchronize our efforts" [syn: synchronise, sync]
            [ant: desynchronize, desynchronize]
       2: happen at the same time [syn: synchronise, contemporize,
           contemporise]
       3: make (motion picture sound) exactly simultaneous with the
          action; "synchronize this film" [syn: synchronise]
       4: arrange or represent events so that they co-occur;
          "synchronize biblical events" [syn: synchronise, contemporize,
           contemporise]
       5: operate simultaneously; "The clocks synchronize" [syn: synchronise]
       6: cause to indicate the same time or rate; "synchronize your
          watches" [syn: synchronise]