1全世界共有2000多个海港,从只有1个泊位,1年只装卸几百吨的装卸点,到多用途、设施完备,年装卸货物3亿吨的枢纽港鹿特丹。280%以上的贸易,其发运地或到达点在发展中国家,是通过水运的。31997年全世界港口吞吐量完成49亿吨,90年代从40亿吨开始,年均递增率在3%以上。4世界港口吞 1 There are more than 2000 seaports in the world, with only 1 berth, loading and unloading hundreds of tons of loading and unloading points in one year, and a multi-purpose and fully-equipped hub with a handling capacity of 300 million tons of loading and unloading goods in Rotterdam. More than 280% of the trade, with their shipping or arrival points in developing countries, is made by water. In 31997, the world's port throughput reached 4.9 billion tons, starting from 4 billion tons in the 1990s with an average annual growth rate of over 3%. 4 world port swallow