Last year the number of nuptials fell by 12% to a little over 8m,the lowest since 2003and well down on the peak of 13.5m in 2013.
请问 well down两个词在句子中分别是什么词性?
and是并列两个状语(修饰fell),well down是副词修饰副词,中心词是down,很好(大)下跌