better by a country 问：A and B which one is better?答：A is better by a country mile

better by a country 问：A and B which one is better?答：A is better by a country mile
better by a country
问：A and B which one is better?
答：A is better by a country mile

better by a country 问：A and B which one is better?答：A is better by a country mile
意思就是“A（比B）要好很多”
a country mile 在这里表示程度,意为：很长的距离,很远的距离

a country mile-----很远的一段距离
A is better by a country mile ---- A更好而B则望尘莫及了