我们常用人心难测形容无法知道一个人内心的真实想法。即便是善于洞察秋毫的刑警,在面对一些狡猾的罪犯时,也很难判断对方说的是真是假,如果再没有足够的证据,往往会使案情陷入绝境。这个时候,警方最希望的就是能洞悉犯罪嫌疑人的内心世界。 We often use unpredictable as impossible to describe a person’s inner real thoughts. Even policemen who are good at insight can hardly judge whether they are true or false in the face of some cunning criminals. If there is not enough evidence, they often make the case fall into despair. This time, the police most hope is able to insight into the inner world of suspects.