俚语：Ex-con/前科犯

　　定义：an ex-convict; a person who has served a prison term有前科的罪犯；曾坐过牢的人

　　例句：When Jones was released from prison he had difficulty finding a job because he was an ex-con.琼斯从牢里放出来后，在找工作上有困难，因为他是个前科犯。