In fact, it is necessary for police to testify before the court.

其实，警察出庭作证有其必要性。

youdao

We always hope that persons who are called before the court will testify.

我们总是希望收到传唤的人能够到法庭作证。

youdao

Only establishing perfect and exercisable witness protection system can dispel the worry of witness, and make them testify before court without fear.

只有通过建立完善的具有可操作性的证人保护机制，才能打消证人的后顾之忧，让其大胆出庭作证。

youdao

Now five international media organisations have supported his stand, urging the tribunal "to recognize a qualified privilege for journalists not to be compelled to testify about their news gathering before this court unless certain conditions are met - namely that the information is absolutely essential to the case and that it cannot be obtained by any other means".

BBC: Milosevic tribunal calls BBC witness

In court papers filed before the trial, the defense wrote that Dr. Dietz may testify that Mr. Valle's fetish history dated to his early adolescence when he became aroused while watching a scene in the movie "The Mask, " during which actress Cameron Diaz is tied up.

WSJ: Jurors Hear From Founder of Fetish Site