1·Therefore, the corrosion was caused by erosion of rainwater during ocean shipping.
因此，这些腐蚀是海运途中雨水的浸蚀造成的。
2·Other actions that may impair fair competition on the international ocean shipping market.
可能损害国际海运市场公平竞争的其他行为。
3·South Africa's roads and railways and even ocean shipping are in a tense situation, and it needs to be upgraded.
南非的公路和铁路甚至是海运都是比较紧张的，需升级换代。
4·Therefore, the corrosion is caused by erosion of rainwater during ocean shipping.
因此，这些腐蚀是海运途中雨水的侵蚀造成的。
5·The fourth part mainly discusses the establishment of systematic ocean shipping safety evaluation index system and the choice of evaluation methods.
第四部分主要研究系统海运安全评价指标体系的建立与海运安全评价方法的选择。