获取多个城市的pm数据
Revert "获取多个城市的pm数据"

This reverts commit 2dc0447be679e90f85d4815de399d75b6da35c0e.
获取多个城市pm

迭代获取
获取多个城市的pm数据
Revert "获取多个城市的pm数据"

This reverts commit 2dc0447be679e90f85d4815de399d75b6da35c0e.
scrape multiple cities
recover deleted files