enormity y极恶;巨大
the enormity of crime极恶
The second part goes on to generally discuss the enormity done to Northeast China during the War between Japan and Russia.
第二部分概括论述了日俄战争期间日俄两军在中国东北所施的暴行。
参考来源 - 日俄战争中日俄军队在中国东北的暴行研究N-UNCOUNT（不可数名词） If you refer to the enormity of something that you consider to be a problem or difficulty, you are referring to its very great size, extent, or seriousness. 艰巨性; 严重性
I was numbed by the enormity of the responsibility.
我对责任的艰巨性感到不知所措。
N-UNCOUNT（不可数名词） If you refer to the enormity of an event, you are emphasizing that it is terrible and frightening. 深重[强调]
...the enormity of the disaster.
…灾难的深重。