Complex sentence: In figure skating, he was a dual Olympic Champion at the 1932 Winter Olympics and the 1936 Winter Olympics, a seven-time World Champion (1930--1936) and the eight-time European Champion (1929--1930).
Split into simpler sentences: In figure skating, he became a two-time Olympic champion at the 1932 Winter Olympics and the 1936 Winter Olympics. He was also a seven-time World champion (1930--1936) and eight-time European champion (1929--1930).