flip-flop
英
美
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n.
夹趾拖鞋;啪嗒啪嗒声;(方向等的)突变;触发器
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v.
<非>(方向等的)突变
Noun:
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a decision to reverse an earlier decision
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a backless sandal held to the foot by a thong between the big toe and the second toe
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an electronic circuit that can assume either of two stable states
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a backward somersault
Verb:
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reverse (a direction, attitude, or course of action)
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