昙花一现 [词典] flower briefly as the broad-leaved epiphyllum; be a flash in the pan; last briefly; a nine days' wonder; a flash in the pan; [例句]他们不过是历史舞台上昙花一现的人物。They are merely passers-by on the stage of history.
昙花一现"in english is "a flash in the pan"or"written in water"昙花一现的人或事:"a nine days wonder"还可用"come and go"表示刚出现便消逝"a flash in the pan", "written in water" also are the good choices.