In the ship safety management system, the seaman is the most fundamental and active elements.

在船舶安全管理体系中，船员是最基本、最活跃的要素。

youdao

In the ship safety management system, the seaman is the most fundamental and active elements.

在船舶安全管理体系中，船员是最基本、最活跃的要素。

youdao