In order to improve and perfect the frontier inspection system, we should build the graded estimation system of seamen's credentials.
为了完善我国边防检查工作体系，应当建立海员证件分级评估制度。
In order to improve and perfect the frontier inspection system, we should build the graded estimation system of seamen's credentials.
为了完善我国边防检查工作体系，应当建立海员证件分级评估制度。
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