con·cur·rent /-ˈkɝənt, ˈkʌrənt/
  同時發生的事件(a.)同時發生的,一致的
  concurrent
  同時; 並行; 同作
  concurrent
  同作 並行
  Con·cur·rent a.
  1. Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect; cooperating.
     I join with these laws the personal presence of the kings' son, as a concurrent cause of this reformation.   --Sir J. Davies.
     The concurrent testimony of antiquity.   --Bp. Warburton.
  2. Conjoined; associate; concomitant; existing or happening at the same time.
     There is no difference the concurrent echo and the iterant but the quickness or slowness of the return.   --Bacon.
     Changes . . . concurrent with the visual changes in the eye.   --Tyndall.
  3. Joint and equal in authority; taking cognizance of similar questions; operating on the same objects; as, the concurrent jurisdiction of courts.
  4. Geom. Meeting in one point.
  Syn: -- Meeting; uniting; accompanying; conjoined; associated; coincident; united.
  Con·cur·rent, n.
  1. One who, or that which, concurs; a joint or contributory cause.
     To all affairs of importance there are three necessary concurrents . . . time, industry, and faculties.   --Dr. H. More.
  2. One pursuing the same course, or seeking the same objects; hence, a rival; an opponent.
     Menander . . . had no concurrent in his time that came near unto him.   --Holland.
  3. Chron. One of the supernumerary days of the year over fifty-two complete weeks; -- so called because they concur with the solar cycle, the course of which they follow.
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  concurrent
       adj : occurring or operating at the same time; "a series of
             coincident events" [syn: coincident, coincidental,
             coinciding, cooccurring, simultaneous]