Complex sentence: In 1926, Rolf left her academic work in New York, to study mathematics and atomic physics at the Swiss Federal Institute of Technology in Zurich and also biochemistry at the Pasteur Institute in France.
Split into simpler sentences: In 1926, Rolf left her academic work in New York. She took leave to study mathematics and atomic physics at the Swiss Federal Institute of Technology in Zurich and also biochemistry at the Pasteur Institute in France.