But factors such as low population intensity and low land productivity restrict the efficient demand for road transport.
但样本县因人口密度过小、耕地生产率低下等因素限制了对公路运输的有效需求。
But factors such as low population intensity and low land productivity restrict the efficient demand for road transport.
但样本县因人口密度过小、耕地生产率低下等因素限制了对公路运输的有效需求。
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