Complex sentence: After a brief spell in teaching, which she did not enjoy, Partridge was apprenticed to a firm of heating, lighting and ventilation engineers in London and then moved to another engineering firm, in Birmingham, where she learned to design and produce small electric motors.
Split into simpler sentences: After a brief spell in teaching, which she did not enjoy, Partridge was apprenticed to a firm of heating, lighting and ventilation engineers in London. She soon joined another engineering firm, in Birmingham, where she learned to design and produce small electric motors.