Lastly, the paper gives some consideration for related problems of YRD transportation.
最后，是对长三角区域交通一体化相关问题的思考。
The keystone of this paper is the theoretical analyze of YRD transportation integration.
本文的重点是对长三角地区交通一体化的理论分析。
Natural resources such as sunshine and land area was optimum in Yellow River Delta(YRD)region.
黄河三角洲地区的光热资源优越，天然降水不足；
Natural resources such as sunshine and land area was optimum in Yellow River Delta(YRD)region.
黄河三角洲地区的光热资源优越，天然降水不足；
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