Complex sentence: She spent all her academic career at the University of Cambridge; she was a lecturer in the history of linguistics from 1984 to 1998, and Reader in the History of Linguistic Thought from 1998 to her death on 2002.
Split into simpler sentences: She spent all her academic career at the University of Cambridge. She was a lecturer in the history of linguistics from 1984 to 1998, and Reader in the History of Linguistic Thought from 1998 to her death on 2002.