protective custody

• 1. 

  N-UNCOUNT If a witness in a court case is being held in protective custody, they are being kept in prison in order to prevent them from being harmed. 保护性拘留

  例：

  They might be doing me a good turn if they took me into protective custody.

  如果他们对我进行保护性拘留，那对我可能是一件好事。