我保证他会出庭。

I guarantee that he will appear in court.

《牛津词典》

传闻证据规则是一项旨在保证证人出庭、保障法官做出正确裁判和实现程序公正、司法公正的重要制度。

The hearsay evidence rule is important system aimed at assurance the witness appears at court, and guarantee the judge do right judgment and realize procedure justness and judicature justness.

youdao

我们应当从出庭作证的申请和决定、传唤、保证书签署、询问和质证等几方面，构建关键证人出庭作证的具体规则。

We can construct the rule for key witness in such aspects as the application and decision of the appearing of witness, summon, signature of paper of guarantees and inquiries.

youdao