bummer [ˈbʌmɚ]

例句:

• It felt like a bummer, a balloon cruelly popped.
  来自WSJ
• What a bummer!
  真烦人！
  
• I had a bummer of a day.
  我一天都很烦。
  
• It's a real bummer that she can't come.
  她不能来，实在令人失望。
  
• So it's quite a bummer, but he's persistent.
  来自VOA
• Bummer for the pika's ...but not really a concern for me.
  来自SA