请求陪审员回避有两种情况，陪审员有某种冲突或法律方面的障碍可以提出回避，比方说这名陪审员是被告的朋友。

There are two kinds of jury challenges. A prospective juror can be challenged "for cause" if he has some kind of a conflict or legal barrier - for example, if he is a friend of the defendant.

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于是，在交谈时他们回避事情真相，以免可能引起冲突，而在他们的幽默中又嘲笑这种回避。

So, while in conversation they avoid truths which might lead to confrontation, in their humour they mock that avoidance.

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