Introducing the background, content of port facility security, and its enforcement in China.

介绍了港口设施保安的背景、内容及其在中国的实施情况。

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Have you contacted the port facility security officer?

A你己经和港口设施保安员联络过吗？

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Have you contacted the port facility security officer?

A你己经和港口设施保安员联络过吗？

youdao