平凡人－英文係咩

layman
n.[C]
1. (未受神職的)一般信徒;俗人
2. 外行人,門外漢
e.g.
a medical textbook not for the layman
不是為外行人編寫的醫學教科書

http://hk.dictionary.yahoo.com/search.html?s=layman

a common citizen/human-being/person/guy
a typical person of our town
a person just like me and you

a down to earth person

ordinary people

平凡人
Even ordinary mortal

ordinary folks
ordinary people
general public

Simple guy/simple person

ordinary people

Example: The novel describes the way of life of the ordinary people there.

a very normal person
person with nothing special

common people