eat crow, eat dirt

eat crow 承認錯誤(積極地接受屈辱
eat dirt 忍氣吞聲(消極地接受屈辱

bite my tongue 忍住不說

It goes without saying that the moderator’s job is to moderate. Paraphrasing a question can be useful, to make sure it was heard and to validate your understanding. But let the panelists answer even if you have to bite your tongue.