Complex sentence: In the summer of 1920, he left Russia and moved to San Francisco, where his family soon joined him; he enrolled in the University of California, Berkeley, getting a B.A. in Oriental Languages in 1924 and a Ph.D. in 1930.
Split into simpler sentences: In the summer of 1920, he left Russia and moved to San Francisco, where his family soon joined him. He enrolled in the University of California, Berkeley, earning a BA in Oriental Languages in 1924 and a PhD in 1930.