词典释义：
释义
a thing or person whose sudden but brief success is not repeated or repeatable
昙花一现，过眼云烟
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our start to the season was just a flash in the pan .我们在本赛季开始时的态势不过是昙花一现。［ORIGIN with allusion to priming of a firearm, the flash arising from an explosion of gunpowder within the lock.］in （或like ）a flash very quickly; immediately迅速，飞快，转眼间；立刻，马上
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she was out of the back door in a flash .眨眼间她已出了后门。