To mass murder is to murder a large amount of people at the same time. 大屠杀指的是在同一时间屠杀大量的人。
He was infamous for his cruelty and for the mass executions of his real or perceived enemies by impaling them on sharpened wooden poles. 他因其残忍和大屠杀而臭名昭著,他将他的实际的敌人和潜在的敌人集体钉死在锐木桩上。