simultaneously
  同時地
  Si·mul·ta·ne·ous a.  Existing, happening, or done, at the same time; as, simultaneous events. -- Si*mul*ta*ne*ous*ly, adv. -- Si*mul*ta*ne*ous*ness, n.
  Simultaneous equations Alg., two or more equations in which the values of the unknown quantities entering them are the same at the same time in both or in all.
  ◄ ►
  simultaneously
       adv : at the same instant; "they spoke simultaneously" [syn: at
             the same time]