以下是我的txt文件中某些行的副本:
Country,City,AccentCity,Region,Population,Latitude,Longitude
ad,aixas,Aixàs,06,,42.4833333,1.4666667
ad,aixirivali,Aixirivali,06,,42.4666667,1.5
ad,aixirivall,Aixirivall,06,,42.4666667,1.5
NotePad ++中是否有一种方法可以使用正则表达式删除每行中除City
之外的所有内容?