testify
verb [ I or T ] uk/ˈtes.tɪ.faɪ/ us/ˈtes.tə.faɪ/
C2 证明，证实;作证
to speak seriously about something, especially in a law court, or to give or provide proof
[ + that ] He testified that he had seen the man leaving the building around the time of the murder. 他作证说，自己看到那人在谋杀发生前后离开了大楼。
- More examples
- I can testify to the foregoing since I was actually present when it happened.
- They were subpoenaed to testify before the judge.
- Ten witnesses are expected to testify at the trial today.