a flash in the pan
曇花一現
口語·形容曇花一現的人或事
英文釋義
something or someone that initially shows great promise but fails to meet expectations in the long run
例句
His early success was just a flash in the pan; he never achieved anything else.
典故來源
源自早期火槍,火藥在藥池中閃光卻未擊發,比喻短暫的成功后無后續。