N-VAR
（激动人心的事情之后）令人失望的情况，令人扫兴的事件
You can describe something as an anticlimax if it disappoints you because it happens after something that was very exciting, or because it is not as exciting as you expected.
例句
Barry's speech followed Dirk Bogarde's appearance, and was an inevitable anticlimax...
巴里紧随德克·博加德之后发表了演讲，不出所料，演讲顿时变得索然无味。
It was sad that his international career should end in such anticlimax.
令人悲哀的是，他的国际职业生涯竟如此惨淡收场。