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.
例句
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。