He has been asked to appear as a witness for the defence.

他已被传唤出庭为被告作证。

《牛津词典》

The court subpoenaed her to appear as a witness.

法庭传唤她出庭作证。

《牛津词典》

Judge Ito said that if his wife was called as a witness, he would step down as trial judge.

伊托法官说如果自己妻子被传为证人的话，他将辞去审判法官的职位。

《柯林斯英汉双解大词典》

A woman dressed like a young professional sits behind him, listening as a witness is questioned.

VOA: special.2009.08.31

Supporters of the bill were there too. Jesse Jackson - a veteran of the civil rights movement - stood in the shadow of the Capital as a witness to history.

VOA: standard.2010.03.22

In 1981 Ayala joined a legal battle as an expert witness in the challenge against an Arkansas law mandating that the biblical story of creation be taught in schools, alongside Darwin's theory of evolution.

VOA: standard.2010.04.05

The FINRA Arbitration Panel granted the motion and Ben was never called as a witness.

FORBES: FINRA Arbitrators Hit Oppenheimer With $1 Million Damages

Mr. Teksler's testimony marked the fourth time an Apple employee was called as a witness.

WSJ: Apple Speeds Through Final Witnesses in Patent Case

He was originally interviewed as a witness because officers thought Ms Pilley was alive.

BBC: David Gilroy fails in Supreme court appeal bid