The back man can see the hats worn by the two men in front of him. So, if both of those hats were white, he would know that the hat he wore was black.

最后面的人能看到前面两个人的帽子，如果前面两个的帽子颜色都是白色，那他知道他的帽子颜色是黑色。

youdao

Old-timers used it to describe a man who had just arrived from one of the big cities back east.

VOA: special.2010.05.23

It is not about finding the average man--which you are--also in the novel, there staring back at you.

也不是寻找小说里和你一样的，也在回头凝视你的平常人。

耶鲁公开课 - 1945年后的美国小说课程节选

Does it mean that we're back to utilitarianism and using people and aggregating preferences and pushing the fat man off the bridge?

那是否意味着我们又回到了功利主义的老路上,利用他人，还简单加总偏好,把那个胖子从桥上推下去？

耶鲁公开课 - 公正课程节选

Oh man, my nephew's coming back, man.

NPR: Coming to Terms with New Orleans' Flood Zones

It has failed to do so since the Tories' coalition partners have failed to back the man who is the government's - and not just the Conservatives' - Chief Whip.

BBC: Mitchell: Act Two of Whitehall farce

It did not happen at the World Bank either: Washington leaned on the members of the developed world to back their man Jim Yong Kim, the former president of Dartmouth College.

CNN: WTO: Emerging markets get the nod