投案tóu∥àn犯法的人主动到司法机关或公安机关交代自己的作案经过,听候处理{give oneself up or surrender oneself to the police; (of a lawbreaker) voluntarily go to a judicial or public security organ to confess to a crime in all its details, and await punishment}: ~自首。{surrender to the police and confess one's crime}奍