Complex sentence: In 1979, Lowell joined Drexel Burnham Lambert's High Yield and Convertible Bond Department, known also as "junk bond" department and served as a departmental senior vice president until he resigned in 1989.
Split into simpler sentences: In 1979, Lowell joined Drexel Burnham Lambert's High Yield and Convertible Bond Department, also known as the "junk bond" department. He served as a departmental senior vice president until he resigned in 1989.