N-UNCOUNT 庞大;巨大 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.
I was numbed by the enormity of the responsibility... 责任之大让我惊慌失措。
He was anxious about the enormity of the task ahead. 他为眼前任务的艰巨性而担忧。
N-UNCOUNT 严重性 If you refer to the enormity of an event, you are emphasizing that it is terrible and frightening.
It makes no sense to belittle the enormity of the disaster which has occurred. 对于已经发生的灾难,其严重性不该小视。
N-COUNT 罪恶;滔天大罪 An enormity is an action that is considered totally unacceptable.