tormentor

例句：

1. 1.The tormentor of my childhood haunts me still.
   我童年的折磨者仍然困扰着我。
2. 2. He was a tormentor to his classmates.
   他对他的同学来说是折磨者。
3. 3. The tormentor's cruelty is well-documented in history.
   折磨者的残忍在历史上广为人知。