The national and provincial trunk highway network has been improved, connecting administrative regions at and above the county level nationwide.
国省干线公路网络不断完善，连接了全国县级及以上行政区。
The national and provincial trunk highway network has been improved, connecting administrative regions at and above the county level nationwide.
国省干线公路网络不断完善，连接了全国县级及以上行政区。
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