n. [电子] 触发器;啪嗒啪嗒的响声;向后翻的筋斗
vt. 使翻转;使突然转变
vi. 作后手翻;突然改变;啪嗒啪嗒地动
adj. 后手翻的;突然改变的
adv. 啪嗒啪嗒响着
Flip-flaps, a peculiar rollicking dance indulged in by costermongers, better described as the double shuffle; originally a kind of somersault. [Hotten's Slang Dictionary, 1864]Flip-flop in the general sense of "complete reversal of direction" dates from 1900; it began to be used in electronics in the 1930s in reference to switching circuits that alternate between two states. As a verb by 1897. Flop (n.) in the sense "a turn-round, especially in politics" is from 1880.