killjoy

例句：

1. 3. 捣乱者例句：1. She was always a killjoy at family gatherings.
   她在家庭聚会上总是一个扫兴的人。
2. 2. The new neighbor is a constant killjoy for the old lady.
   这个新邻居是老妇人的常客，总是给她带来麻烦。
3. 3. He was a constant source of frustration and disappointment to his friends, a true killjoy.
   他一直是朋友们的沮丧和失望之源，真是个扫兴的人。