求翻译：综观国内外的港口建设，都把铁路交通建设纳入重点配套设施。我国有1.8万公里的海岸线，镶嵌着数以百计的优良港湾。目前三类以上的港口就有100多个。随着改革开放的不断深入，一个个新兴的港口城市，都把铁路交通建设项目作为当务之急进行规划建设。据不完全统计，到2001年底伸向港口城市的新建的已通车的铁路达20条，约5500公里；正在施工建设的有7条，1286公里；正在规划设计的有10条，1842公里。另外一些已有铁路的港口城市，也都在规划设计新的铁路运输通道，修建复线或进行技术改造，提高运行速度，增强运能和运力，如环渤海湾地区、长江下游三角洲地区、珠江三角洲地区。是什么意思？

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Looking at the construction of ports, both at home and abroad are included in the railway traffic-building focused on facilities. There are 18,000 km of coastline, studded with a number of the 100 meter high tower. Currently more than 3 type of port is more than 100. Along with the deepening of refo

Looking at the port construction at home and abroad, into focus construction of railway transport facilities. 18,000 km of our coastline, inlaid with hundreds of exce