昙花一现

昙花一现 [tán huā yí xiàn]

1. ■ flower briefly as the broad-leaved epiphyllum; be a flash in the pan; last briefly; a nine days' wonder; like the morning dew; rare and brief appearance; vanish as soon as it appears:

昙花一现的人物 a transient figure;

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.