PHRASE
未取得預(yù)期效果的事;失敗;落空
You can describe something such as an event or a performance as a damp squib when it is expected to be interesting, exciting, or impressive, but fails to be any of these things.
例句
The all-party meeting was a damp squib.
全黨大會(huì)沒(méi)有取得預(yù)期效果。