layman

外行；门外汉；俗人；一般信徒英释nnsomeone who is not trained in a particular subject or type of work, especially when they are being compared with someone who is

1 To the layman (= laymen in general ) all these plants look pretty similar..对外行的人来说，这些植物看起来都很相似。

2 If you don’t understand what the doctor says, ask to have it explained in layman’s terms (= in simple language )..如果你听不懂医生的话，就请他用通俗易懂的语言来解释一下。