Man on the Clapham omnibus的意思|示意

Can you persuade the man on the Clapham omnibus that it is useful?

你能让普通人相信这个很有用吗？

You have to explain it in terms that the man on the Clapham omnibus would understand.

你必须用老百姓能理解的语言来解释这事。

The legal test here is a comparison with the supposedly ordinary man—the man on the Clapham omnibus, as the legal cliché has it.

此处的法律鉴定是相对于普通的正常人而言——正如法律上的老生常谈的“普通人”。