safety navigation

常见例句

Safety navigation should be borne in mind.
时刻牢记安全航行第一。
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How to ensure the safety navigation of vessels was an important issue for scholars in navigation field.
如何保障船舶航行安全一直是航海界专家学者研究的重点。
To solve the design matter related to channd bends, the basic requirements of the width in accordance with the need of safety navigation is analyzed.
为解决弯曲航道的设计问题，从确保船舶航行安全的角度，重点分析对航道宽度的要求；

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