名词
中文翻译：运输标记
同义词：
['shipping label', 'shipping tag', 'shipping identifier']
例句：
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1. The customs agent inspected the shipment to ensure it was properly marked.
海关官员检查了货物，以确保其正确标记。
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2.The company uses a unique marking system for its products to prevent counterfeiting.
该公司使用独特的标记系统来防止仿冒。
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3.The shipping mark on the package indicates that it has been inspected and cleared by customs.
包裹上的运输标记表明它已经过海关检查并清关。