资料来源 : WordNet®

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}]

flip-flopping
     See {flip-flop}