以前一位教授

以前 yiˇ qianˊ

(Ago, Before, Period Of Time) Before, Ago, Period of time before

一位 yiˊ weiˋ

(A, An, One) A, An, One (e.g. a person)

教授 jiaoˋ shouˋ

(Instruct, Professor, Teach, To instruct, To teach) Professor, To teach, To instruct, Teach , Teaches , Teaching , Taught , Instruct , Instructs , Instructing , Instructed