holocaust|holocausts

许多博物馆致力于教育人们了解大屠杀的历史。

Many museums are dedicated to educating people about the ___Holocaust.

历史记录了几次可怕的种族灭绝事件，其中一些几乎毁灭了整个文明。

History has recorded several terrible ___holocausts that nearly wiped out entire civilizations.