Hěnduō gémìngjiā niánqīng shí dōu céng chūguó liúxué.
Many revolutionaries studied abroad when they were young.
Tips
usage
革命者 is anyone who takes part in a revolution; 革命家 is kept for its leaders and thinkers. In mainland usage it is a formal honorific: obituaries of senior leaders call them 无产阶级革命家 (proletarian revolutionary).