self-incrimination
noun [ U ] uk/ˌself.ɪn.krɪm.ɪˈneɪ.ʃən/ us/ˌself.ɪn.krɪm.əˈneɪ.ʃən/
自证有罪
saying or doing something that shows that you are guilty of a crime
A witness can legally refuse to give evidence to avoid self-incrimination. 证人可以合法拒绝作证，以避免自证其罪。