letdown [ˈlɛtˌdaʊn]

例句:

• The post-rebellion letdown endangers real serious, further public discontent.
  来自VOA
• The movie was a letdown.
  那电影真令人失望.
  
• He found himself completely unable to suppress a sense of disappointment, of letdown.
  他感到自己有一种完全无法抑制的受挫和失望的感觉.
  
• It's really a letdown to let Tom join us.
  让汤姆加入我们真是一件扫兴的事情.
  
• But the bigger letdown is the author's approach to the subject.
  来自SA
• However, the food was the big letdown of this four star hotel.
  来自THETIMES