红胡子巴巴罗萨是神圣罗马帝国最著名的皇帝之一。

___Barbarossa was one of the most famous emperors of the Holy Roman Empire.

巴巴罗萨行动是德军1941年对苏联发动的大规模入侵。

Operation ___Barbarossa was Germany's massive invasion of the Soviet Union in 1941.