layperson
noun /ˈleɪpɜːsn/
  /ˈleɪpɜːrsn/
(also lay person)
 (also layman)
 (plural laypeople, laypersons)
- a person who does not have expert knowledge of a particular subject非专业人员;外行;门外汉 - The layperson cannot really understand mental illness.外行人无法完全了解精神疾病。 
 
- The layperson cannot really understand mental illness.
- a person who is a member of a Church but is not a priest or member of the clergy平信徒,在俗教徒(非神职人员)