Have you contacted the port facility security officer?
A你己经和港口设施保安员联络过吗？
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。
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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