speak daggers to sb.

例句：

1. 1.She spoke daggers to her boss about the project.
   她对老板关于这个项目说了难听的话。
2. 2. He spoke daggers to his wife about the divorce.
   他对妻子说了些关于离婚的刻薄话。
3. 3.They spoke daggers at each other in front of the crowd.
   他们在人群面前互相说了一些刻薄的话。