Joe Blow is also an expression for a common man.

VOA: special.2010.02.07

The idea that if labor is left free then that common man always has a chance.

这个观点表明如果劳动是自由的,那么平民始终有希望

耶鲁公开课 - 美国内战与重建课程节选

A critic once described Miller as an activist for the common man.

VOA: special.2009.11.29