2HARM/BE BAD FORsomething that is likely to cause you very serioustrouble, or even your death 可能带来极大麻烦[死亡]的事
By indulging in casual sex, many teenagers could be signing their own death warrants.
许多青少年随意与人发生性关系并沉迷于此,这等于在自寻死路。
Examples from the Corpus
death warrant• Magnets are a death warrant to computer disks.• If he does, he is signing his death warrant.• Perhaps that was his death warrant.• Although he did not sign the king's death warrant, he was present at his execution.• I have already signed the death warrant.