名词短语
中文翻译：海关操作和程序
同义词：
['customs procedures', 'customs operations']
例句：
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1.Customs officials are responsible for ensuring the smooth flow of goods through customs.
海关官员负责确保货物顺利通过海关。
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2. The customs office is the first point of contact for any importers or exporters.
海关办公室是任何进口商或出口商的首次接触点。
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3. Customs clearance is a crucial process that ensures compliance with international trade regulations.
海关清关是一个关键过程，确保遵守国际贸易法规。