The appeal was heard in private.

这件上诉案不公开审理。

《牛津词典》

The sound of video games can be heard in private homes and public game centers all across America.

在美国各地的私人住宅和公共游戏中心都能听到电子游戏机的声音。

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For reasons that remain unclear, the case was heard by a military court, where the judge tried to hold the trial in private, claiming that the jury was afraid of being seen on television.

因为不知名的原因，这起案件由军事法院审理，法官还尽力想以不公开的方式开庭，声明陪审团害怕上电视。

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In the military, we use an array of software, most of which is not used or even heard of in the private industry so how do we compete with people who have that experience.

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The procedures committee, which will look at potential options for reform at a meeting in private, heard a suggestion that parliament should also be informed of any changes.

BBC: MSP 'correction' rules to change

Well you know I've not heard those, I promise you, either in private or in public.

BBC: Transcript of George Osborne interview