language Points in the text
defense witness
witnessed
witness
1. witness  1) (vt ) “亲眼看到”  你亲眼看到那场事故了吗？ Did you ________ the accident?2) witness (vi)  “作证”、“证实”  witness to sth/doing sth”：他作证说他看到那个人进入大楼.He ______ to having seen the man enter the building.3）witness  (n)  “目击者”、“证人”她被传唤作被告证人。She was called as a _______ _______ .be a witness to ….是…目击者bear / give witness to sth为…作证
(在法庭上)作证
I thought , at the time, that this was just a story but then I witnessed it with my own eyes many times.
at  ...