Ports are terminals of waterbornetransportation where cargoes are loaded and unloaded and conveyances switch here, so it is absolutely unique and important in transportation system .
港口是水路运输的节点，又是各种运输方式的转换场所，在整个交通系统中起着不可替代的作用。
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While the constant accidents followed poses new problems to safety in waterbornetransportation, the most pressing one is that of lacking of the assessment standards of safety management.