剃刀杀人犯

例句：

1. 1. He was accused of being a serial murderer.
   他被指控为连环杀手。
2. 2. The police are investigating the case of the mysterious robber.
   警方正在调查这个神秘抢劫犯的案件。
3. 3. The murderer confessed to the crime and was sentenced to death.
   凶手认罪并被判处死刑。