也就是說;即
you use to wit when you are about to be more exact about sth that you have just referred to
Pilot error, to wit failure to follow procedures, was the cause of the accident.飛行員的失誤,即沒有遵守操作程式,是事故的原因。
釋義來自《牛津高階英漢雙解詞典》第 9 版