flip-flop /ˈflɪpˌflɑp/
 觸發器


 flip-flop
 正反器


 flip-flop
      n 1: a decision to reverse an earlier decision [syn: reversal,
           change of mind, turnabout, turnaround]
      2: a backless sandal held to the foot by a thong between the
         big toe and the second toe
      3: an electronic circuit that can assume either of two stable
         states
      4: a backward somersault
      v : reverse (a direction, attitude, or course of action) [syn: interchange,
           tack, switch, alternate, flip]
      [also: flip-flopping, flip-flopped]