corpus delicti
noun /ˌkɔːpəs dɪˈlɪktaɪ/
  /ˌkɔːrpəs dɪˈlɪktaɪ/
[singular] (law- the circumstances in which a law is broken, and the facts relating to the case犯罪事实 
- evidence that can be seen, for example a dead body犯罪事实的证据(如尸体) 
词源Latin, literally ‘body of offence’.