bummer
noun [ S ] offensive uk/ˈbʌm.ər/ us/ˈbʌm.ɚ/
令人不快的事情；带来不便的事
something that is very annoying or not convenient
"I've left my wallet at home." "What a bummer!" “我的钱包忘在家里了。”“真糟糕！”
US I locked my keys in the car - bummer! 我把钥匙锁在汽车里了——真糟糕！