The police are sifting the evidence very carefully to try and find the guilty person.警察在非常仔细地检查证据，试图找出罪犯。A judge passes a sentence on a guilty person.法官判决犯罪的人。Unless the guilty person owns up, the whole class will be punished.除非犯了错的同学站出来认错，否则全班都要受到惩罚。