reversal

reversalreversalD.J.:[riˈvə:səl]K.K.:[rɪˈvɚsəl]n.1.■反向, 反转, 倒转He demanded a reversal of a previous decision.他要求撤销以前的决定。2.■运气不好

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reversal[ri'və:səl]n.1.■颠倒；逆转，倒转2.■【法律】(对判决的)变更；撤销；推翻3.■【摄影术】反转

reversalreversal[riˈvə:səl]n.1.■颠倒, 逆[倒, 反]转; 反向; 反复; 相反2.■【律】撤消, 废弃3.■【摄】正负片之间的转换a reversal of wind风向突然逆转That would be reversal of the order of host and guest.这就主客颠倒了。